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Language Medicina oral, patología oral y cirugía bucal. Ed inglesa. 2011. Vol. 16, no. 2
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- Traumatic dental injuries among schoolchildren in Valencia, Spain(2011) Faus Damiá, Maria; Alegre Domingo, Teresa; Faus Matoses, Ignacio; Faus Matoses, Vicente; Faus Llácer, VicenteAim: The aim of the present study was to identify some factors related to the occurrence of dental trauma in mixed and permanent dentition. Design of the study: Over a period of two months 1325, 6 to 18 year olds from three primary schools in Valencia were examined. Data was collected through clinical examinations and interviews and their Dental trauma was classified according to IADT´s criteria. Results: The prevalence of dental injuries was 6%; boys aged between 12-18 years old experienced more injuries than girls. There was a statistical difference between the types of fractures. Non complicated coronal fractures were the most frequent (9.18%). Games were the main cause of trauma (40%) in both sexes. In 14.3% of patients a dental colour change was observed. Angle´s class I was the most frequent in traumatized injured children (41.2%). Conclusions: The present study revealed a relatively low prevalence of dental trauma, but this figure still represents a large number of children. Therefore, educational programs are to be initiated for the community regarding causes , prevention and treatments of traumatic dental injuries.
- Effect of psychological stress on orthodontic tooth movement in rats(2011) Mirzakouchaki, Behnam; Firoozi, Fazel; Firoozi, ShirinIntroduction: The purpose of this study was to investigate the effect of psychological stress on orthodontic tooth movement in Wistar rats. Materials and methods: Forty-eight female ten-week old Wistar rats with an average weight of 188 ±12 gr were selected and randomly divided into two experimental and control groups. The experimental group received crowded environment-induced and cat odour stresses 4 weeks before spring insertion. On the 29th day in both groups, maxillary incisors were moved by the insertion of springs and exactly after 7 days, 9 rats from each group and after 14 days the remaining rats were sacrificed. Then the mesioincisal distance between maxillary incisors was measured. Afterwards, histological sections were prepared to count osteoclasts under a light microscope. The data on the extent of orthodontic tooth movement and the number of osteoclasts were analyzed by independent sample t-test. Results: The results indicated that on the 7th day after spring placement the orthodontic tooth movement was significantly higher in the control group compared to the experimental group (p<0.05). The number of osteoclasts at a significance level of ?=0.1 in the control group was higher compared to the experimental group. On the 14th day after spring placement, the orthodontic tooth movement in the control group was significantly higher compared to the experimental group (p<0.05). However, there were no significant differences in the number of osteoclasts between the two groups. The rats experienced weight loss in the experimental group (p<0.05). Conclusions: Psychological stress led to a decrease in orthodontic tooth movement and in the number of osteoclasts around the root in the movement direction in rats, but a decrease in osteoclast counts was not parallel with time and demonstrated a nonlinear pattern. In addition, psychological stress led to weight loss in rats.
- Retrospective study of maxilla growth in a Spanish population sample(2011) Alió Sanz, Juan José; Iglesias Conde, Carmen; Lorenzo Pernía, José; Iglesias Linares, Alejandro; Mendoza Mendoza, Asunción; Solano Reina, EnriqueThis study has been designed to evaluate the vertical and sagittal changes in the maxilla due to growth. A sample group was chosen of 38 individuals with normal occlusion, composed of 16 females and 22 males between the ages of 8 and 18. The total sample was divided into three groups: prepubescent (8-11 years), pubescent (12-14 years) and post-pubescent (15-18 years). A series of cephalometric angle parameters (SNA, maxillary height, slope of the palatal plane and maxillary depth) and lineal parameters (effective maxillary length, palatal plane length, middle third of the face height and convexity) were traced. Superimpositions of the initial and final cephalometries in the Ba-N plane and in the Nasion fixed point were carried out to measure growth. An analytic statistical analysis was applied using a Student t test for independent samples in order to evaluate the differences found according to sex. An analysis of variance followed by Duncan?s multiple range test was done to study the evolution of each variable throughout the duration of the experiment. In light of the results obtained, we have come to the following conclusions: sagittal growth of the maxilla is constant from the age of 8 to 18 years with an average increase of 0.2 mm/ year. Vertical growth, as well as general maxillary growth, is greater in the prepubescent group
- Biocompatibility of a chlorhexidine local delivery system in a subcutaneous mouse model(2011) Monteiro, Adriana Socorro Ferreira; Macedo, Luís Guilherme Scavone; Macedo, Nelson Luiz; Feitosa, Fernanda Alves; Toyoshima, ThiagoObjective: This study aimed evaluating histologically and histomorphometrically the response of the conjunctive tissue face to the implant of chlorhexidine chips in the subcutaneous tissues of rats. Study Design: In this research 35 male rats Wistar were used to analyze the biocompatibility and the degradation process of chlorhexidine chip. In each animal, it was made 2 incisions for subcutaneous implantation of chlorhexidine chip (test group) and a polytetrafluorethylene membrane (control group). The morphological changes in subcutaneous implantations were assessed after 1, 3, 5, 7, 10, 14, 21 days. The data were submitted to Friedman nonparametric test to analyze the comparisons among observation periods and to allow the comparison among groups. Results: Differences were found in the analysis of the inflammatory response when comparing the tested materials (p values ? 0.05). In test group was observed hemorrhage, edema and intense inflammatory infiltrate predominantly neutrophilic around material. From 3-day and subsequent periods was verified granulation tissue externally at this infiltrate. From 10-day on was observed crescent area of degradation of chlorhexidine chip, associated with neutrophilic and macrophagic infiltrate, that maintained until 21-day. In the control group, moderate inflammatory infiltrate was observed initially, predominantly polymorphonuclear, edema and granulation tissue 3-day period. The inflammatory infiltrate was gradually replaced for granulation tissue, culminating in a fibrous capsule. Giant multinucleate cells situated at contact interface with the coating was examined since 3-day and persisted until 21-day. Conclusion: The chlorhexidine chip induces an intense acute inflammatory response at subcutaneous tissue of rats. Therefore, at conditions of this study was not biocompatible
- The cytotoxicity of resin composites cured with three light curing units at different curing distances(2011) Ergün, Gülfem; Egilmez, Ferhan; Cekic Nagas, IsilObjective: The purpose of this study was to compare the effect of light curing distance on the cytotoxicity of five resin composites cured with three high-power light curing units. Study design: Seven cylindrical discs of each material (Grandio ®, Voco; Filtek ? Z250, 3M ESPE; Clearfil ? AP-X, Kuraray Co. Ltd.; Aelite ? LS, Bisco Inc. and Simile ®, Pentron) were cured. For curing, soft-up mode of quartz-tungsten-halogen, exponential mode of light emitting diode for 20 s, and ramp-curing mode of plasma arc light curing units for 6 s were used. The curing tip distances were determined as 2 and 9 mm and controlled via the use of metal rings. After ageing the samples for 24 and 72 hours in Dulbecco?s Modified Eagle Medium/Ham?s F12 (DMEM/F12), cytotoxicity of the extracts to cultured fibroblasts (L 929) was measured by using MTT (tetrazolium salt 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) assay. The degree of cytotoxicity for each sample was determined according to the reference value represented by the cells in a pure culture medium. Statistical significance was determined using multifactorial analysis of variance. Results: The type of resin composite (p<0.05), light curing unit (p<0.05), curing tip distance (p<0.05) and evaluation period factor (p<0.05) had statistically significant cytotoxic effects on L?929 mouse fibroblast cells. However, when the tested materials polymerized at both distances (2 mm and 9 mm) in both evaluation periods (24h and 72h), there was no significant difference in the mean CSR% values obtained when the quartz-tungsten-halogen, light emitting diode and plasma arc light curing units were used (p=0.184, F=1.448). Conclusions: The results of this study suggest that the light curing units and resin composites should be harmonized to one another and the curing distance between the tip of the light curing unit and the restoration surface should be as close as possible in order to achieve maximal biocompatibility
- Use of Bichat s buccal fat pad for the sealing of orosinusal communications. A presentation of 8 cases(2011) Abad Gallegos, Marta; Figueiredo, Rui; Rodríguez Baeza, Alfonso; Gay Escoda, CosmeObjectives: To determine the efficacy of the pediculate flap with the buccal fat pad in the sealing of orosinusal communications, describe the surgical technique used, and report the main complications. Patients and method: A retrospective study was made of 8 patients seen in the Service of Oral Surgery of the University of Barcelona Dental Clinic (Spain) for the treatment of orosinusal communications between the years 2007 and 2009. In all cases a pediculate flap with the buccal fat pad was used to solve the problem. Results: All of the orosinusal communications were successfully resolved with this technique. The immediate postoperative complications were pain (37.5%), inflammation (37.5%), edema (32.5%), trismus (37.5%), halitosis (14.3%), suppuration (12.5%) and rhinorrhea (12.5%). Conclusions: The use of Bichat?s buccal fat pad is not regarded as the technique of choice for sealing small to medium sized orosinusal communications. However, in the case of large communications, it is a good option, and the results obtained are optimum.
- Efficacy of a bioactive alloplast, in the treatment of human periodontal osseous defects-a clinical study(2011) Subbaiah, Rajiv; Thomas, BijuPresently, bone replacement grafts are one of the modalities of therapy for which there is histologic evidence of regeneration coronal to the base of the previous osseous defect. Bioactive glasses are used extensively in medicine and dentistry. This study evaluated the additional efficacy of a bioactive alloplast, PerioGlas, in comparison with open flap debridement only. 8 systemically healthy volunteers were chosen, each having 2 collateral sites with ?6 mm clinical probing depth and radiographic evidence of an intrabony defect. Randomly, one defect was treated with open flap debridement plus bioactive glass (test) and the other with open flap debridement alone (control). At baseline, 3, 6, 9 months measurements were recorded which included plaque index, gingival index, pocket probing depth, clinical attachment level, and increase in gingival recession. Standardized radiographs were used to measure defect fill and alveolar crest resorption. The data were subjected to statistical analysis. Both treatments showed no significant differences between the two groups at any point of time. However, radiographically, bioactive glass group showed significant improvement in bone fill over the sites treated with open flap debridement alone. The alloplastic bone graft material, PerioGlas, demonstrated clinical advantages beyond that achieved by debridement alone.
- Ultra-structure characterization of self-etching treated cementum surfaces(2011) Aguilera, Fátima S.; Osorio, Estrella; Toledano Pérez, Manuel; Osorio Ruiz, R.Objectives: to evaluate the effect of different conditioning treatments on surface roughness and topography of dental cementum. Study Design: Extracted human canines were used for the present study. The mesial surface from the cervical third of the roots were ground flat with wet 600-grit silicon carbide paper. They were polished (up to 1/4 µm diamond paste) and treated as follows: 1) No treatment, 2) 35% H3PO4 during 15 s, 3) Clearfil SE Bond primer (SEB), 4) One-Up Bond F (OUB). The adhesive systems were applied following manufacturer?s instructions. SEB primer and OUB were removed from surfaces by washing and ultrasonic agitation with ascending ethanol solutions. Digital images of treated surfaces (5x5 and 15x15 µm) were obtained by means of an atomic force microscope (AFM) analysis. The average surface roughness (Ra nanometers) of the scanned areas was assessed. Data were analyzed by ANOVA and SNK multiple comparisons tests (p<0.05). Results: phosphoric acid treatment produced the highest mean roughness value, at all scan sizes. At 5x5 µm AFM images, for self-etch adhesive systems no differences in roughness were detected. At 15x15 µm, when One-Up Bond F was employed the lowest value was obtained. Conclusions: When phosphoric acid treatment was applied, cementum surface roughness increased and a strong demineralization with exposed collagen fibers could be observed.
- Analysis of the morphology and composition of tooth apices apicectomized using three different ablation techniques(2011) Lustosa Pereira, Ana Cláudia; Pozza, Daniel Humberto; Cunha, Alexandre; Dedavid, Berenice Anina; Duarte de Moraes, João Feli; Oliveira, Marilia Gerhardt deObjectives: To investigate apicectomies performed using burs, a CO2 laser or an Er:YAG laser and to evaluate the following aspects: morphology of apicectomized surfaces, presence of failures at the dentin/obturation material interface (marginal fit) of the apical portions of the root canals, and the proportions of chemical elements in the apicectomized surfaces. Study design: Twenty-four teeth were divided into three groups of eight and each group underwent apicectomy by one of three different ablation techniques: bur, CO2 laser or Er:YAG laser. The morphology of the apicectomized surfaces was then analyzed using scanning electron microscopy and their chemical composition was analyzed by energy dispersive spectroscopy. Results: Surfaces produced with ablation by bur exhibited less surface irregularities and better marginal fit, while ablation with the CO2 laser caused intense surface carbonization and failures in obturation material fit. Conclusions: Our results suggest that, taking into consideration their clinical application, ablation of tooth apices using burs proved to be the best option among those tested here.
- Calculation of bone graft volume using 3D reconstruction system(2011) Calvo Guirado, José Luis; Maté Sánchez de Val, José Eduardo; Delgado Ruiz, Rafael Arcesio; Ramírez Fernández, PiedadObjectives: To obtain bone ?bioreplicas? for determining precisely the amount of biomaterial required for bone regeneration procedure. Study design: A case-control comparison with a total sample size of 20 cases, 10 control and 10 test samples. ?Bioreplicas? were generated from helical CAT scans with 0.5 mm slices, without 3D reconstruction or image filters. Bone defects in premolar and molar areas were treated with titanium mesh and xenograft (MP3) combined with resorbable carriers. Time taken to carry out procedures with and without the use of ?bioreplicas? (in minutes), discrepancies between the grafts performed with and without ?bioreplicas? and bone defects (mm), and postoperative complications were registered. Results: No significant differences were recorded for measurements of width and length of bone defect between patient bone and the biological models. Conclusions: The use of ?bioreplicas? obtained by rapid prototyping is effective in treatment planning.
- Sleep bruxism. Conceptual review and update(2011) Hoz Aizpurua, José Luis de la; Díaz Alonso, Esperanza; LaTouche Arbizu, Roy; Mesa Jiménez, JuanSleep bruxism (SB) is a parafunctional oromotor habit that can sometimes pose a threat to the integrity of the structures of the masticatory system if the magnitude and direction of the forces exerted exceed the system?s adaptive capacity. Over the years science has tried to provide a consistent explanation of the etiopathogenesis and physiopathology of SB, although the pathophysiological mechanisms are even now not yet fully understood. There is at present no specific, effective treatment to eliminate the habit of bruxism permanently. There are only palliative therapeutic alternatives steered at preventing the pathological effects of SB on the stomatognathic system and alleviating the negative clinical consequences of the habit. The objective of this article is to review and update the fundamental scientific concepts of SB and to furnish an approach to the main types of therapy used, based on the scientific literature.
- Complications of guided surgery and immediate loading in oral implantology : a report of 12 cases(2011) Abad Gallegos, Marta; Gómez Santos, Laia; Sánchez Garcés, María Angeles; Piñera Penalva, Manuel; Freixes Gil, Jordi; Castro García, Ana; Gay Escoda, CosmeObjectives: The growing interest in minimally invasive surgery, together with the possibility of fitting prostheses with immediate function, have led to the development of software capable of planning and manufacturing a surgical guide and prosthesis that can be placed upon conclusion of the implant surgery step. The present study evaluates the surgical and prosthetic complications of implant treatment with the guided surgery technique, together with patient comfort during and after treatment. Patients and methods: A retrospective observational study was made of 19 patients with partially or totally edentulous upper and/or lower maxillae, involving the placement of a total of 122 implants. All cases were planned and operated upon with the guided surgery technique. Results: A total of 122 implants were placed in 14 males and 5 females. The intraoperative surgical complications comprised a lack of primary stability, while the postoperative complications consisted of infections and a lack of implant osteointegration. Ten implants failed. The prosthetic complications in turn comprised loosening of the provisional prosthesis screws, prosthesis tooth fracture, and a lack of passive fit of the immediate prosthesis. The degree of patient satisfaction was evaluated using a verbal scale. Conclusions: Implant restoration with the guided surgery technique and immediate functional loading is a predictable procedure, provided patient selection and the surgical technique are adequate, affording lesser postoperative morbidity and increased patient satisfaction thanks to the immediate restoration of esthetics and function.
- Long-term analysis of upper incisor crowding. A longitudinal study orthodontically treated patients(2011) López Areal, Luis; Paredes Gallardo, Vanessa; Gandía Franco, José LuisIntroduction: Although there are numerous studies in the literature on alignment stability in the lower arch, there are few referring to the upper arch. Aims: To assess upper arch stability (irregularity index, widths and length of arch, overjet and overbite) in orthodontically treated patients by comparing late incisor stability with the initial malocclusion and type pf treatment undertaken. Study design: The study models of 51 patients, treated with or without extractions, were analysed at three different points in time: pre-treatment (T1), post-treatment (T2) and post-retention (T3) (average 5 years). The following parameters were measured: irregularity index, arch length, inter-canine and inter-molar widths, overjet and overbite. Results: The results showed that upper incisor crowding relapses, although a net improvement is noted in comparison to the initial state both in cases treated with or without extractions. The arch length also relapses in both cases. The inter-canine and inter-molar widths as well as the overjet and overbite are stable in the long term. The long-term response of maxillary incisor alignment is unpredictable. Conclusions: There is a statistically significant reduction in incisor irregularity, length and width of arch (inter-canine and inter-molar widths), whereas overjet and overbite undergo a reduction of little magnitude. No statistically significant correlation is noted between late incisor stability and the initial malocclusion or type of treatment.
- Influence of cavity preparation technique (rotary vs. ultrasonic) on microleakage and marginal fit of six end-root filling materials(2011) Rosales Leal, J. Ignacio; Olmedo Gaya, María Victoria; Vallecillo Capilla, Manuel Francisco; Luna del Castillo, Juan de DiosObjectives: To evaluate in vitro the effect of cavity preparation with microburs and diamond-coated ultrasonic tips on the microleakage and marginal fit of six end-root filling materials. Study Design. The following materials were assessed: amalgam (Amalcap), zinc oxide eugenol (IRM), glass ionomer (Vitrebond), compomer (Cavalite), mineral particle aggregate (MTA) and composite (Clearfil). Cavity preparation was performed with microburs or diamond ultrasonic tips in single-root teeth. The seal was evaluated in two experiments: a microleakage assay on the passage of dye to the interface; and a scanning electron microscopy study and analysis of epoxy resin replicas, measuring the size of gaps in the interface between filling material and cavity walls. Multifactorial ANOVA, multiple comparison test and Student?s t test were used for statistical analyses of the data, considering p<0.05 to be significant. Results: Clearfil and MTA achieved a hermetic seal. Leakage and interface gap size was greater with Cavalite than with Clearfil and MTA, followed by Vitrebond and IRM. The worst seal was obtained with Amalcap. The use of diamond-coated ultrasonic tips improved the seal and reduced the gap when using materials that did not hermetically seal the cavity (Amalcap, IRM, Cavalite, Vitrebond). The preparation technique did not affect materials that achieved a hermetic seal (Clearfil, MTA). Conclusions: Clearfil and MTA obtained a hermetic seal due to their excellent marginal fit and are the most recommended materials for clinical use, taking account of their sealing capacity. Ultrasonic cavity preparation is preferable because it improves the seal and marginal fit of materials that do not achieve a hermetic seal of the cavity (Amalcap, IRM, Cavalite, Vitrebond).
- Orofacial dermoid cysts in pediatric patients : a review of 8 cases(2011) Bonet Coloma, Cristina; Mínguez Martínez, Ignacio; Palma Carrió, Cristina; Ortega Sánchez, Bárbara; Peñarrocha Diago, María; Mínguez Sanz, J. M.Objective: The aim was to analyze the clinical characteristics, treatment and outcome of 8 orofacial dermoid cysts (DC) in pediatric patients. Material and Methods: A retrospective observational study was made, reviewing the medical records with clinical diagnosis of dermoid cyst between 1987 and 2006 in the Children?s Maxillofacial Surgery Department of the Hospital Universitario La Fe, Valencia, Spain. The following data were collected: sex, age, location, size and duration of the lesion, treatment, length of follow-up, and recurrence. Results: Eight patients (3 girls and 5 boys) with a mean age of 2.7 years (range 0-12 years). Four DC were located in the oral area (3 sublingual and 1 lingual), one in the periorbital and three in the nasal areas. The size ranged from 0.8 cm to 4 cm. The mean duration of the lesion was 13.7 months (range 4 days to 2 years). All DC were diagnosed pathologically following surgical removal of the lesion. There were no recurrences. Conclusion: The appearance of DC in the maxillofacial region of pediatric patients is uncommon. The floor of the mouth is the most frequently affected area in the oral cavity. Treatment is surgical removal of the lesion. Recurrence is unusual.
- The mandibular angle in osteoporotic men(2011) Cakur, Binali; Dagistan, Saadettin; Harorli, Abubekir; Ezmeci, Elif BaharObjectives: Osteoporosis induces the reduction of bone mass and screening for low bone mineral density (BMD) by dual-energy x-ray absorptiometry (DXA) has been the current gold standard test to determine osteoporosis. Panoramic radiography is widely used in dentistry for routine examination of jaws. The objective of this study was to determine the relationship between the mandibular angle (MA) values and the vertebral bone mineral density (v-BMD) in 20 osteoporotic men. Study design: In panoramic radiograms of osteoporotic men, the means were calculated for the mandibular angle values measured in the right and left mandible. v-BMD values were also calculated by manual analysis of DXA scans. The correlation between these variables was assessed. Results: A negatively significant correlation was found between the MA and v-BMD. Conclusions: The size of the mandibular angle decreases when osteoporosis increases. It is suggested that the mandibular angle may be useful in clinical dental practice to identify osteoporotic men with previously undetected low bone mineral density.
- Histological evaluation of bone repair using beta-Tricalcium Phosphate(2011) Frota, Riedel; Silva Junior, Valdemiro Amaro da; Teixeira, Marcelo Lucchesi; Veras Sobral, Ana Paula; Silva, Emanuel Dias de; Da Silveira, Márcia María Fonseca; Aragao Neto, Adelmo CavalcantiObjectives: The aim of the present study was to evaluate bone repair in defects induced in the cranium of Wistar rats using ?-tricalcium phosphate. Study Design: In this research, we used 30 rats, randomly distributed in three groups of 10 animals (G1, G2 and G3), corresponding respectively to time of histological evaluation (7, 15 and 30 days). This was a paired study, a defect being induced in the parietal bone on either side of the median sagittal suture of the animals, being the left-hand side the experimental subgroup (filled by biomaterial) and the right control. The histological evaluation was performed by means of light microscopy. The collected data were submitted to the Fisher Exact test for comparison between the groups and to the McNemar test for comparison between the subgroups (P > 5%). Results: The results showed no statistically significant differences between the groups and bone regeneration was similar at the different times of evaluation. Conclusions: Therefore, we concluded that ?-tricalcium phosphate has not contributed significantly to repair process of defects induced in the cranium of Wistar rats
- Bone regeneration using particulate grafts : an update(2011) Aloy Prósper, Amparo; Maestre Ferrín, Laura; Peñarrocha Oltra, David; Peñarrocha Diago, MaríaObjective: A review is made of the publications on bone regeneration using particulate grafts, with an evaluation of the success of implants placed in such regenerated areas. Material and Method: A Medline search using different key words was made of the articles published between 1999-2009 involving at least two patients subjected to grafting with autologous, homologous or xenogenic bone, non-bony substitutes, or a combination of these grafts for the placement of dental implants. Studies involving block grafting were excluded. A total of 11 studies were evaluated. Results: These grafts are indicated in cases of small or peri-implant bone defects such as dehiscences and fenestrations, with the possibility of combining a barrier membrane. However, some authors have used particulate block grafts to secure vertical or horizontal increments of the alveolar process. In most of these cases, graft healing until implant placement lasted 6-9 months. The most frequent complications in the receptor zone were wound dehiscences with exposure of the membrane. In almost all cases, prosthetic loading of the implants took place more than three months after their placement. The implant survival rate varied from 90.9% to 100%, with an implantation success rate of 85.7% to 100%. Conclusions: Although our sample is small, due to the difficulty of finding homogeneous studies, it can be concluded that particulate grafts are effective in correcting localized defects of the alveolar process. The complications of particulate grafting are few, and the success rate of implants placed in the reconstructed areas varies from 85.7% to 100%.
- Immunohistochemical characteristics of the Implant-Hosted Bon : preliminary findings of 9 mandibular cores(2011) Sakka, Salah; Kujan, OmarObjectives: The aims of this study were to investigate the biochemical topography of collagen types I and III and to describe the histological structure at the implant placement site to determine the clinical significance of the findings and their possible interaction with bone healing around dental implants. Material and Methods: Bone cores from 9 mandibles were taken from the site of placement of dental implants. The reliable technique for rapid preparation of fresh-frozen undecalcified bone sections and the indirect immunofluorescent technique as an immunohistochemical procedure were applied. All sections were viewed under U.V light. For comparative purposes the tissue blocks remaining were used for general histology examination. Results: A homogenous distribution of collagen type I throughout the sections of all cores was evident. Whereas, the distribution of collagen type III throughout the sections of all cores was heterogeneous with different staining patterns. On the other hand, seven cores of the general histology study showed a structure of lamellar mature bone and two cores showed a structure of less mature woven bone. Conclusion: The biochemical and histological structures of the hosted bone may have an impact on the speed of bone healing around dental implants.
- Satisfaction of patients fitted with implant-retained overdentures(2011) Balaguer Martínez, José; García Mira, Berta; Peñarrocha Diago, María; Peñarrocha Diago, MiguelObjective: to evaluate patient satisfaction with implant-retained overdentures, and its relationship with age, sex, period of follow-up, the rehabilitated jaw (maxilla, mandible or both), number of implants, splinting, type of attachment and the antagonist.Material and methods: the study comprised patients with overdentures fitted between January 1996 and June 2007, and with a minimum follow-up of one year. Data regarding patients and prostheses were collected. The patients indicated their overall satisfaction on a visual analogue scale (VAS) from 0 to 10, as well as satisfaction for individual items such as aesthetics, speech, mastication, prosthetic stability and selfesteem. These data were collected one month after fitting the prostheses, at 12 months and at a final examination. Statistical analyses were made using the SPSS version 15, statistical significance was considered for p<0.05.Results: the study included 95 patients, 43 men and 52 women, with a mean age of 55.9 years; 76 edentulous mandibles and 31 edentulous maxillae were rehabilitated with 107 overdentures. One hundred and thirty-seven implants were placed in the maxilla, and 224 in the mandible. The mean level of overall satisfaction was 9 at one month of fitting the prosthesis, 8.8 at 12 months and 8.7 at the final control (mean 71 months).Conclusions: the patients fitted with implant-retained overdentures expressed a high level of overall satisfaction, independently of age, sex, length of follow-up, rehabilitated jaw, number of implants per overdenture, whether splinted or non-splinted, and type of attachment. Men were more satisfied with mastication and stability.
