Li informem dels canals usuals corresponents per al dipòsit, articles de revista: es dipositen a través de GREC (https://www.uv.es/sbiblio/Roderic/com_dipositar_articles_GREC.pdf). Altres documents com llibres o capítols de llibre (https://www.uv.es/sbiblio/Roderic/guia_investigaci%c3%b3_2024.pdf), s’han de dipositar directament en el repositori institucional RODERIC.

Journal of Clinical and Experimental Dentistry. 2025. Vol. 17, no. 06

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https://hdl.handle.net/10550/112208

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Interception of Class III malocclusion with facemask therapy: a retrospective cohort study
(Medicina Oral S.L., 2025) Saldarriaga Valencia, Jenny Angélica; Santamaría vélez, Adriana; Alvarez Varela, Emery; Quintero, Yasmy; Manrique Hernández, Rubén Darío; Ardila Medina, Carlos Martín; Santos Pinto, Ary
Class III malocclusion, characterized by maxillary retrusion or mandibular prognathism, poses significant challenges in orthodontic treatment. Early intervention with facemask therapy aims to correct skeletal discrepancies, but outcomes vary. This study evaluates the efficacy of rapid palatal expansion (RPE) and facemask therapy in improving maxillomandibular relationships in growing children with Class III malocclusion.A retrospective cohort study was conducted on 37 patients (mean age 7.5 ± 1.1 years) treated with RPE and Petit facemask therapy. Cephalometric radiographs were analyzed at treatment onset (T0) and completion (T1). Patients were divided into Group 1 (favorable outcome, ANB angle increase) and Group 2 (unfavorable outcome, ANB unchanged/decreased). Statistical analysis included dependent and independent t-tests to compare skeletal and dental changes.Group 1 (62.2% of patients) showed significant improvements in ANB angle (1.85° increase), maxillary position (SNA, A-Nperp), and cranial base dimensions (S-N, S-Ar). Group 2 (37.8%) exhibited worsening maxillomandibular relationships (ANB decrease of 1.0°). Key differences included cranial base angle (NSAr), maxillary sagittal position, and mandibular prognathism (Pog-Nperp). Vertical growth increased in both groups, with no significant rotational changes in the mandible or maxilla.Facemask therapy with RPE effectively improved skeletal Class III malocclusion in 62.2% of cases, primarily through maxillary advancement and cranial base adaptation. Unfavorable outcomes were associated with larger initial ANB angles and mandibular prognathism. Early intervention during prepubertal growth stages is recommended for optimal results.
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Fracture Resistance of CAD/CAM Nanohybrid Resin Occlusal Veneers Based on Bonding Surface: Enamel vs. Enamel-Dentin vs. Enamel-Resin Coating
(Medicina Oral S.L., 2025) Tozo-Burgos, José-Giancarlo; Juárez-Vizcarra, César Fernando; Calla-Poma, Roger; Sánchez-Tito, Marco
Occlusal veneers provide an effective alternative for treating severe tooth wear. The aim of this study was to evaluate the influence of the bonding surface on the fracture resistance of CAD/CAM nanohybrid resin occlusal veneers with different thicknesses.A total of 62 occlusal veneers were fabricated for first premolars. The specimens were divided into two groups of 36 based on the thickness of the veneers, (1.0 mm and 1.5 mm). Each group was further subdivided according to the bonding surface, categorized as enamel, enamel-dentin, and enamel-resin coating. The fracture resistance of the veneers was evaluated by applying a constant load at a speed of 1 mm/min using a universal testing maching. After fracture of the samples, they were analyzed using a stereomicroscope. Student’s t-test was employed to compare fracture resistance in relation to thickness and bonding surface. Addionally, two-way ANOVA was used to assess the interaction between the variables. The significance level was set to 5%.The 1.5 mm occlusal veneers exhibited significantly higher fracture resistance compared to the 1.0 mm veneers (p< 0.05). The two-way ANOVA test indicated that the interaction between restoration thickness and bonding surface was not significant (p = 0.3008). However, both restoration thickness (p< 0.001) and bonding surface (p< 0.001) had a significant impact on fracture resistance.Fracture resistance was highest in CAD/CAM nanohybrid resin occlusal veneers bonded to enamel and resin coatings. Likewise, restorations with a thickness of 1.5 mm showed significantly higher values across all three groups evaluated.
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Effect of Brazilian red propolis on microtensile bond strength and sealing ability of the methacrylate-based bonding agents
(Medicina Oral S.L., 2025) Vidal, Gustavo César Feitosa; Balbino, Edson Philippe Bezerra; Oliveira, José Marcos dos Santos; dos Santos, Natanael Barbosa; Lôbo, Teresa de Lisieux Guedes Ferreira; do Nascimento, Ticiano Gomes; de Freitas, Johnnatan Duarte; de Freitas, Jeniffer Mclaine Duarte; Porto, Isabel Cristina Celerino de Moraes
The aim of the study was to analyze the sealing ability and microtensile bond strength of a dental adhesive with propolis.Red propolis extract was added to an experimental methacrylate-based adhesive (EA) at following concentrations: 100 (EA PV100), 250 (EA PV250) e 500 μg/mL (EA PV500). Single Bond Universal adhesive (SB) and EA without propolis were used as controls. The effectiveness of the dentin sealing was evaluated at nanoscale (silver uptake) and microscale (dye microleakage). Microtensile bond strength (µTBS) was measured 24 hours after the bonding process. Data were analyzed by one-way ANOVA and Tukey’s test (α=0.05).EA PV500 showed the best coronal sealing, with better performance than the control and the commercial adhesive. Immediate µTBS values ranged from 28.94 + 9.25 MPa (EA PV100) to 39.09 + 9.60 MPa (SB). Comparing SB and EA with propolis, a significant decrease in µTBS was noted (p<0.05). The EA without propolis had similar performance to SB (p=1.000).Nanoleakage and microleakage were not eliminated in any of the groups, but EA PV500 µg/mL exhibited the best sealing ability, with superior performance compared to the control and commercial adhesive. A decrease in μTBS of AE with propolis was observed.
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Ion Release, Microhardness and Enamel Demineralization Resistance of New Bioactive Restorative Materials
(Medicina Oral S.L., 2025) Maaly, Tayseer; Darweesh, Fawzy A.; Elnawawy, Mohamed Samir
The objective of the study was to assess fluoride and calcium release from new bioactive materials and to correlate the results with surface hardness and enamel demineralization resistance.Three ion releasing restorative materials were considered: Surefil one (SO), Equia forte fil HT (EF), and Activa bioactive resorative (AB). Baseline microhardness (MH) of the restorative materials was recorded. The amount of released fluoride and calcium ions and microhardness of the materials were estimated at different intervals of 7,14 and 21 days storage in distallid water. Ion release values were recorded using Ionchromatography. Finally, enamel demineralization resistance was evaluated using a microhardness tester. Enamel surface morphology, calcium and phosphorous wt. % were evaluated utilizing the scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM\EDX).SO released more fluoride and lower calcium ions than the other groups (p< 0.05). EF recorded more fluoride and calcium ion release compared to AB. The highest MH values at all intervals were for SO followed by EF, both materials exhibited significant MH increase upon storage. AB exhibited the lowest MH which decreased upon storage. In the acid resistance test, EF showed effective resistance to demineralization followed by AB.EF is an effective restorative material when applied in cariogenic media with adequate surface hardness qualities upon storage.
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Accuracy in diagnosing caries in young permanent molars using interproximal radiographic imaging and validation by artificial intelligence
(Medicina Oral S.L., 2025) de Brito, Débora-Heloísa-Silva; Dos Santos, Thaysa-Gomes-Ferreira-Tenório; Costa, Samylla-Glória-de Araújo; dos Santos, Adriana Stone; da Silva, Igor Lucas Balbino; da Silva, Nathália Regina Cauás; Fernandes, Bruno José Torres; Niederman, Richard; Mota, Cláudia Cristina Brayner de Oliveira; Da Silveira, Márcia María Fonseca; Heimer, Mônica; Rosenblatt, Aronita
Caries lesions, in their early stages, can be challenging to identify clinically, as they often do not cause symptoms or are in areas that are difficult to access. Caries diagnosis involves high subjectivity and can lack consistency among professionals with different backgrounds and levels of experience. Discrepancies may occur between examiners or even with the same examiner at other times. With technological advancements, increasingly efficient methods for diagnosing dental caries are available, and new techniques and tools are under study. This study aims to evaluate the accuracy of diagnosing caries lesions in young permanent molars using interproximal radiographs by training object detection algorithms with an artificial intelligence (AI) system and comparing them to inter-examiner diagnoses.A descriptive study was conducted in interproximal images of the first permanent molars of children aged between 6 and 9 years. The radiographs were obtained from three private radiological clinics in The Federal District The training was conducted by graduate dentists and calibrated using Professor of Radiology (MCF) as the gold standard. The YOLOv8 model architecture and a pre-trained classifier (EfficientNet-B0) were used.The kappa agreement index was obtained to evaluate the degree of agreement between examiners. The inter-examiner agreement in the caries diagnosis was considered excellent, being 97.4%, with a kappa value of 0.88. The YOLOv8 model was applied to detect carious teeth using AI. The results show that the model achieved excellent performance, with accuracy metrics of 91% and precision of 98%. The EfficientNet-B0 classifier categorized teeth with and without caries lesions. The classifier achieved an accuracy of 89%.There was excellent inter-examiner agreement in evaluating caries diagnosis for the teeth assessed. The AI-based method proposed in this study showed good performance and proved effective in recognizing caries lesions in radiographic images.
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Assessment of minimally invasive caries excavation methods on caries-affected human dentin: a comparative analysis
(Medicina Oral S.L., 2025) Chawla, Ria; Shetty, Preethesh; Bhat, Raksha
Dental caries is a major global health issue, leading to tooth loss, infections, and even systemic complications. Modern dentistry favours minimally invasive caries removal, but its impact on the bond between composite and caries-affected dentin requires further study. The present in vitro analysis evaluated the microtensile bond strength (μTBS) of composite bonded to human dentin impacted by caries, after three caries removal methods: SmartPrep bur, chemo-mechanical removal, and air abrasion. The null hypothesis posited no significant difference in bond strength among the techniques.Twenty-one extracted human molars with caries, but no pulpal involvement, were randomly allocated into three groups. Caries removal was performed using: 1) SmartPrep bur, 2) chemo-mechanical method using Papacarie® gel (Formula & Acao, Sao Paulo, Brazil) 3) air abrasion (AquaCare air-abrasion (Velopex, London, UK). Following caries removal, a two-step etch-and-rinse adhesive and composite restoration were placed. The test specimens from each group underwent microtensile bond strength testing utilizing a Universal Testing Machine, data were statistically analysed using one-way ANOVA and further examined with Tukey’s post hoc test (p<0.05).Analysis revealed that SmartPrep bur demonstrated superior microtensile bond strength (33.31 ± 10.23 MPa), followed by chemo-mechanical removal (22.86 ± 11.61 MPa). Air abrasion yielded the lowest mean bond strength values (15.74 ± 2.99 MPa). The SmartPrep bur and air abrasion groups showed statistically significant differences (p = 0.012).This study demonstrated that the caries removal technique significantly influences the bond strength of composite to caries-affected dentin. The SmartPrep bur achieved superior microtensile bond strength, suggesting potential clinical benefits. These results emphasize the importance of technique selection for achieving optimal restorative outcomes.
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Clinical evaluation of chemically cured conventional glass ionomer after light emitting diode radiant heat enhancement: a randomized controlled clinical trial
(Medicina Oral S.L., 2025) Ebrahim, Eman Awad; Mohamed, Basma Hosny; Fahmy, Ola Mohamed Ibrahim; Safy, Rehab-Khalil
Assessing the clinical efficiency of chemically cured conventional glass ionomer after light-emitting diode radiant heat enhancement using Federation Dentaire International (FDI) criteria for assessment of dental restorations, regarding both functional and biological properties immediately, after 6 months and 12 months.Twenty-two healthy patients were selected where each patient had two oclusso- mesial cavities in upper or lower second permanent molar. Standardized oclusso- mesial cavities were prepared for all the selected teeth, for each patient the first tooth was restored with chemically cured conventional glass ionomer cements (GICs) without any enhancement (M1 group). Meanwhile, the second tooth was restored by the same material enhanced with radiant heat light emitting diode (LED) (M2 group). Functional and biological criteria of each restoration was clinically evaluated immediately after restoration (T0), six months later (T1), and after 12 months (T2) using Federation Dentaire International (FDI) criteria for assessment of dental restorations.Chi-squared and Wilcoxon’s signed rank test revealed that there was no statistically significant difference between both groups for the tested properties at baseline and 6 months follow-up time. At 12 months of follow-up time, 55% of M1 group and 95% of M2 group were clinically successful with significant difference between them.Chemically cured conventional GIC enhanced with LED radiant heat exhibited better clinical performance than the same material without enhancement at 12 months of follow-up time.
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Bioceramic dressing and its influence on intratubular penetration and bond strength of endodontic sealers
(Medicina Oral S.L., 2025) Rodrigues, Lívia Pacheco; Pereira, Jefferson Ricardo; Vier-Pelisser, Fabiana Vieira; Jahnke, Leonardo Thomasi; Só, Gabriel Barcelos; da Rosa, Ricardo Abreu; So, Marcus Vinícius Reis
This study aimed to evaluate the influence of bioceramic root canal dressing (BRCD) BIO-C TEMP (BT) on intratubular penetrability through confocal laser scanning microscopy (CLSM) and bond strength (push out) of epoxy resin AH Plus (AH) and bioceramic Bio-C (BC) sealers and evaluate the dentin surface after removing the intracanal medication by scanning electron microscopy (SEM).After biomechanical preparation, 48 bovine incisors were filled and evaluated for bond strength and intratubular penetrability. The groups were established by the type of sealer used: AH (n=24) or BC (n=24) and no use (0BT) (n=8) or use of root canal dressing for two different experimental times, 7 (7BT) (n=8) and 30 (30BT) (n=8) days. For SEM evaluation, five unfilled teeth were used: without BT (n=1), BT for 7 (n=2) and 30 (n=2) days. Kruskal-Wallis and T-tests were performed for bond strength analysis. Descriptive analysis was used in CLSM and SEM evaluations.BT decreased the bond strength of AH and BC sealers in both experimental times (7 and 30 days) (P< 0.05). The intratubular penetration with AP was higher than that with BC. SEM showed remnants of BT on the dentin surface in both groups (7 and 30 days). The AH Plus sealer showed more evident intratubular penetration than the Bio-C sealer.It is not possible to remove a BRCD completely from the root canal. A bioceramic root canal dressing Bio-C Temp decreased the bond strength of both tested sealers, epoxy resin AH Plus and bioceramic Bio-C Sealer.
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Ligneous periodontitis: a molecularly confirmed case of type I plasminogen deficiency
(Medicina Oral S.L., 2025) Sarioglu, Atanur; Ugurlu, Kubra; Karaman, Meltem; Karakaya, Taner; Kirtiloğlu, Tuğrul; Zengin, Zeynep
Congenital plasminogen (PLG) deficiency is an exceptionally uncommon hereditary disease associated with biallelic pathogenic / likely pathogenic variants in the PLG gene. Ligneous periodontitis (LP) is a rare disorder that can occur as a result of a lack of plasminogen. It is defined by the presence of lobulated, membranous, and ulcerated masses in the gums, as well as significant damage to the surrounding bone. This case report presents the diagnosis, treatment, and follow-up outcomes of a 23-year-old male patient who referred to our clinic with a complaint of widespread gingival enlargement. We identified a novel c.2087G>C (p.Arg696Pro) variant with a known variant detected in a compound heterozygous state in PLG confirming the molecular etiology. This case report emphasizes the importance of dentists identifying oral manifestations of various systemic diseases. Careful examination of such findings and the timely referral of patients to appropriate specialists for diagnosis and treatment are of critical significance.
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Importance of early arthrocentesis in temporomandibular joint closed lock by disc displacement without reduction. A case review
(Medicina Oral S.L., 2025) Borrás Ferreres, Jordi; Gay Escoda, Cosme
Arthrocentesis (joint lysis and lavage) and hydraulic distension with manipulation of the temporomandibular joint have been described as effective options for reducing joint pain and improving function in patients with limited mouth opening (closed lock) due to disc displacement without reduction, fundamentally in the acute phase of the disorder. However, the efficacy and scientific basis of such treatment have not been validated to date. As a result, the most frequent management strategies tend to be more conservative and mainly focus on the use of nonsteroidal antiinflammatory drugs and/or muscle relaxants, occlusal splints and physiotherapy.The present study was carried out to assess the efficacy of early arthrocentesis in improving mouth opening and reducing joint pain in a woman with a 10-day history of acute closed lock due to left temporomandibular joint disc displacement without reduction.
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Managing oral surgery in von willebrand disease: lessons from a challenging case
(Medicina Oral S.L., 2025) Ascani, Giuliano; Ranalli, Paola; Azzuni, Francesca; Benfatto, Silvia; Romano, Michele; Di Nobile, Erminia
Von Willebrand disease is a rare inherited bleeding disorder characterized by deficient or defective von Willebrand factor, crucial for platelet adhesion and aggregation. This case report aims to highlight the challenges of diagnosing undiagnosed von Willebrand disease in dental practice and to describe a multidisciplinary management approach to prevent life-threatening complications during oral surgery. A 32-year-old male with no significant medical history underwent surgical extraction of an impacted third molar. The patient experienced severe intraoperative bleeding unresponsive to standard local hemostatic measures. Subsequent hematological evaluation confirmed Type I von Willebrand disease. For the extraction of the remaining impacted molars, a tailored protocol was implemented, including preoperative administration of von Willebrand factor-containing factor VIII concentrates, tranexamic acid therapy, local hemostatic agents, and close perioperative monitoring in collaboration with hematology specialists. The initial procedure resulted in excessive bleeding, leading to the diagnosis of von Willebrand disease. Following the implementation of the multidisciplinary protocol, the patient underwent multiple extractions without immediate or delayed bleeding complications. Hemoglobin levels remained stable postoperatively, and the patient reported satisfactory pain control. Early identification and tailored management of bleeding disorders are critical in oral surgery to prevent severe hemorrhagic complications. A multidisciplinary approach involving dentists, oral surgeons, and hematologists ensures safe and effective care for patients with von Willebrand disease, emphasizing the importance of comprehensive preoperative assessments and structured treatment protocols.
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Gelatin methacryloyl advances in regenerative dentistry: a global bibliometric analysis
(Medicina Oral S.L., 2025) Dugaich, Adriana Poli Castilho; Barboza, Andressa da Silva; Leite, Christiane Cabral; Rocha, Aurélio de Oliveira; dos Anjos, Lucas Menezes; Prado, Alexandre-Henrique-dos Reis; Bottino, Marco Cícero; de Andrade, Juliana Silva Ribeiro
This study aims to comprehensively appraise the bibliometric features of articles evaluating the utilization of gelatin methacryloyl (GelMA) in dentistry by conducting a bibliographic search on the Web of Science databases until January 2025.The following data were gathered: number and density of citations; authors; year, journal of publication and impact factor; study design and theme; keywords; institution and country of origin. The collaborative network was identified with the VOSviewer software and used to generate collaborative network maps for authors and keywords.A total of 133 articles reporting the use of GelMA in dentistry were included. The articles were published between 2014 and 2025, and the most prevalent journals were Dental Materials (10,17% and 276 citations) and Acta Biomaterialia (10,1% and 208 citations) The most frequent study designs and themes were laboratory-based in vitro studies (58,6%) and endodontics (37,6%), respectively. Bottino MC (9%; 464 citations) and Dubey N (4,5%; 345 citations) were the most prominent authors in the list. Most articles originated from China (52,6%) and the United States (29,3%). University of Michigan (12,8%) and Sichuan University (6,7%), located in the USA and China, respectively, were the institutions with the most articles. There was a strong negative correlation between the number of citations and the year of publication, with the most recent articles being the most cited.Global articles related to the use of GelMA in dentistry were published mainly in China, with laboratory-based studies conducted in vitro addressing topics related to the use of GelMA in endodontics.
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Stafne bone cavity: a systematic review
(Medicina Oral S.L., 2025) Boffano, Paolo; Ruslin, Mohammad
The typical imaging aspect of Stafne Bone Cavities is that of a radiolucent ovoid or round shape image in the posterior mandible below the nerve canal. Anyway, bilobate and bilateral lesions have been reported too, as well as lesions above the inferior alveolar canal. The etiology and pathogenesis are still unknown. The aim of the present article is to review the literature about the current knowledge of this peculiar anatomical condition.The current study was a comprehensive systematic review that was conducted by using databases on the following online sites: PubMed, Embase, SCOPUS, Wiley Online Library, and Ovid MEDLINE.Before applying the filters, 238 publications were identified at first in the considered databases. After the application of the filters, the removal of the duplicates, and the screening process, we ended up with 39 articles that were used in our review. The prevalence of Stafne Bone Cavities oscillates between 0,03% and 3,55%. Mean age ranges between 45,4 and 60,8 years. Males outnumber females, with male:female ratios ranging between 9:4 and 11:0. The most common sites of SBC are observed in the posterior mandible, with body and/or angle regions being the most frequent localization in all studies.A wait-and-see approach in terms of a periodic radiograph is recommended in view of the features of this entity, as in exceptional cases tumors seem to have developed in the invaginated salivary gland tissue.
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A comparative evaluation between cheiloscopic patterns and canine relationship in permanent dentition
(Medicina Oral S.L., 2025) Saravanan, Elanthendral; Ravindra, Vignesh; Arthanari, Abirami
The precise determination of occlusal relationships, particularly the alignment of maxillary and mandibular canines, is fundamental to orthodontic diagnosis and treatment planning. Cheiloscopy, the study of lip print patterns, has gained prominence in forensic odontology and is hypothesized to have potential relevance in orthodontics. This study aims to evaluate the relationship between cheiloscopic patterns and canine relationships in permanent dentition to assess its diagnostic significance.A cross-sectional observational study was conducted on 300 adolescents (aged 14–16 years) from Chennai. Canine relationships were classified as Class I, Class II, or Class III based on standard intraoral examination protocols. Lip prints were collected using the lipstick-cellophane transfer technique and analyzed based on the Suzuki and Tsuchihashi classification system. Statistical analysis, including the Chi-Square test and Fisher’s Exact Test, was performed using SPSS software (version 22.0), with a significance threshold of p < 0.05.Type II (branched) lip prints were the most prevalent across all canine relationships (71.3%), followed by Type IV (reticular) (17.7%). A significant gender-based difference was observed in Class III canine relationships (p = 0.003), where males predominantly exhibited Type II patterns (86.7%), while females showed a higher frequency of Type IV patterns (36.4%). No significant gender differences were noted in Class I and Class II relationships.Cheiloscopic patterns demonstrate notable variations across different canine relationships, with significant gender-based differences in Class III relationships. These findings suggest that cheiloscopy may serve as a non-invasive adjunct in orthodontic diagnosis and forensic odontology.
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Comparative analysis of enamel surface integrity and pulpal temperature in debonding metallic brackets: a study of two intensity levels of diode laser versus conventional method
(Medicina Oral S.L., 2025) Varghese, Remmiya Mary; Mathew, Ashwin George; Kishore, Shreya; Thomas, Lincy Rachel; Mohan, Reshma
The process of removing metallic orthodontic brackets creates difficulties which affect the enamel surface condition along with excessive temperature rise in the pulp. Traditional ethnomethodological debonding methods lead to enamel destruction yet the advent of diode lasers promises to decrease adverse side effects. Speakers evaluate the impact of using two different laser intensity settings during diode laser-assisted bracket debonding on enamel surface preservation andclarations of intrapulpal temperature changes.A test involved sixty human premolars bonded with metallic brackets by means of a standardized adhesive system that was then randomly distributed into three groups where each group consisted of twenty premolars (Group A – conventional debonding by pliers, Group B – laser debonding at 2.5 W, and Group C – laser debonding at 3.5 W). The research used thermocouple technology to monitor pulpal temperature changes while Scanning Electron Microscopy (SEM) together with modified Adhesive Remnant Index (ARI) evaluated the condition of enamel surfaces. A statistical Analysis was performed by using ANOVA and post hoc tests in which the p value was set below 0.05.The debonding technique by conventional means (Group A) generated a mean temperature elevation of 2.1 ± 0.5°C in the pulpal area while Group B with 2.5 W laser power and Group C with 3.5 W laser power led to temperature rises of 4.5 ± 0.8°C and 6.2 ± 1.1°C respectively. Quantitative evaluation through SEM revealed Group A had the highest rates of enamel damage whereas Group C registered the lowest amount of enamel modification. The ARI results confirmed that Group A experienced more adhesive residual on enamel surfaces whereas both Groups B and C maintained more adhesive material on their bracket bases during the debonding process.Diode laser-assisted brackets debonding conducted at low and high intensity settings produced better enamel preservation results than standard debonding methods. The pulpal temperature generated at the 3.5 W setting exceeded other measurements which justifies careful use of this method. A diode laser at 2.5 W offers a suitable tradeoff between enamel protection and pulpal thermal safety.
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Residual dentin thickness in maxillary first premolars with palatal groove after endodontic and restorative procedures: an e-Vol DX analysis
(Medicina Oral S.L., 2025) Filho, Gilberto Siebert; de Oliveira, Helder Fernandes; Vaz, Alline Soares; Matias, Karolina Kellen; Guedes, Orlando-Aguirre; Pecora, Jesús Djalma; Borges, Alvaro Henrique; Moraes, Rafael-Ratto
This study aimed to measure residual dentin thickness in maxillary first premolars with a palatal groove after root canal instrumentation, filling material removal, and post space preparation using e-Vol DX, an advanced CBCT imaging analysis software.Fourteen extracted maxillary first premolars with a palatal groove on the buccal root were selected. Dentin thickness was measured at 4 stages: initial (M1), after instrumentation (M2), after filling material removal (M3), and after post space preparation (M4). Measurements were taken in 3 root regions: cervical (1 mm coronal to the groove), middle (at the groove’s deepest point), and apical (2 mm apical to the groove). Data were analyzed using ANOVA and Tukey’s post hoc test (α = 5%).Significant reductions in dentin thickness were found in all walls across treatment phases. In the palatal wall, dentin thickness dropped below 1 mm after instrumentation, retreatment, and post space preparation. In the buccal and mesial walls, thickness fell below 1 mm after retreatment and/or post space preparation. The distal wall was less affected. The average groove depth was 0.66 ± 0.20 mm, and average groove length was 5.72 ± 1.65 mm.Post space preparation in maxillary first premolars with palatal groove on the buccal root significantly reduces dentin thickness, especially in the palatal wall, increasing the risk of root weakening. Clinicians should carefully assess the indication of intraradicular posts in such cases to avoid potential complications.
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Innovative Hydroxyapatite-Coated Titania Nanotubes for Dental Implant Surface Enhancement
(Medicina Oral S.L., 2025) Arumugam, Parkavi; Princeton, Bianca; Yadalam, Pradeep Kumar; Ardila Medina, Carlos Martín
The present study aimed to develop novel hydroxyapatite-coated titanium dioxide or titania nanotubes (TNTs) as a surface modification on titanium dental implants and analyze their surface, chemical properties, biocompatibility, and corrosion resistance.The titanium implant surface was treated with 1 ml of Kroll’s reagent, 5 ml of nitric acid, 1.5 ml of sulfuric acid, and water for 10 seconds to allow etching of the surface. The etched surface was then anodized to create a layer of titanium dioxide, which, on treatment with 1wt% of hydrofluoric acid in water under the anodization process with 100 volts for 1 hour at room temperature, led to the formation of TNTs. The nanotube surface was then dipped in Hank’s solution, allowing hydroxyapatite deposition on the surface. After 7 days, the hydroxyapatite-coated TNTs (GROUP A) as a surface coating on titanium implants was characterized and compared with bare titanium implants (Group B).The material characterization showed successful development of hydroxyapatite-coated TNT formation on titanium implant surface, which supported cell adhesion, proliferation, and migration, similar to uncoated titanium surfaces. No statistically significant difference in the percentage of cell viability was noted between Groups A and B at any time point, with the highest percentage of cell viability with a mean of 93.20 +/- 4.324 for Group A and 94.00 +/- 6.205 for Group B noted at 72 hours, with a p-value of 0.21. Corrosion testing showed the coating’s higher corrosion potential and reduced corrosion density compared to uncoated titanium surfaces with the bode phase angle approaching 1, suggesting its potential for better clinical outcomes.The hydroxyapatite-coated TNTs have good surface, chemical corrosion-resistant properties, and optimal biocompatibility. Further in vivo studies are warranted to assess the osteogenic and antimicrobial properties, as well as the clinical efficacy, of this coating.
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Evaluation the Effect of Rosmarinic Acid as an Antioxidant Agent on Shear Bond Strength of Resin Composite to Bleached Enamel
(Medicina Oral S.L., 2025) Mohamadipour, Hamideh; Akbari, Majid; Zamanpour, Moona; Nemati Karimooy, Atefeh; Shahri, Arsalan; Khorshid, Mehrzad
Tooth bleaching, a routine esthetic dental procedure, can compromise bond strength to enamel and dentin, especially if composite restorations are bonded immediately post-bleaching due to residual peroxide and free radicals. To address this, various treatments, including antioxidants like sodium ascorbate (SA), have been used, though SA may increase bacterial accumulation. Rosmarinic acid (RA), an alternative antioxidant, offers additional antibacterial and adhesive benefits. This study evaluates the effect of RA application time on shear bond strength (SBS) in bleached enamel, comparing its efficacy with SA under varying treatment durations. Three null hypotheses regarding RA’s impact on SBS are tested.The labial surfaces of 60 freshly extracted bovine incisors were randomly assigned into 6 groups and subjected to a specific surface treatment as follows: no bleaching procedure (NBL), bleaching with 38% hydrogen peroxide (BL), BL+ 10% sodium ascorbate for 10 min (SA), BL+ RA for 10 seconds (RA1), 60 seconds (RA2) and 10 min (RA3). The resin composite was bonded to enamels s immediately after these treatments. After storage in water for 24 hours, the bonded samples were mounted on a universal testing machine and loaded to the fracture point. Data analysis was performed using Kolmogorov-Smirnov, Lilliefors, One-way analysis of variance and Games-Howell tests.The NBL group had the highest SBS, comparable only to SA (P= 0.908). SA outperformed all RA groups (P< 0.001). RA3 showed the lowest SBS, significantly lower than RA1 (P= 0.011). The main fracture mode in all research groups was adhesive failure.Rosmarinic acid was not able to reverse the bond strength to enamel immediately after the bleaching process, regardless of the duration of application.