Log In 
Language Medicina oral, patología oral y cirugía bucal. Ed inglesa. 2008. Vol. 13, no. 1
Permanent URI for this collection
Browse
Recent Submissions
- Four-point bending evaluation of dentin-composite interfaces with various stresses(2008) Staninec, Michal; Nguyen, Harrison P.; Kim, Paul; Marshall, Grayson W.; Ritchie, Robert O.; Marshall, Sally J.Fracture properties of composite-dentin beams bonded with a self?etching adhesive were tested following short term pretreatments to simulate potential degradation mechanisms (thermal cycling, immersion in 5% NaOCl, or fatigue cycling). Beams of rectangular cross-section were shaped to a size of ~0.87 x 0.87 x 10 mm and placed in a four-point bending apparatus, with the loading points 1.8 and 7.2 mm apart, with the interface centered between the inner rollers. Testing was performed in Hanks? Balanced Salt Solution at 25 ?C . Solid dentin and solid composite beams [n = 6] had bending strengths of 164.4 and 164.6 MPa, respectively, under monotonically increasing loads. Bonded beams [n = 6] had strengths of 56.3 MPa. Thermo-cycling (5? to 55?C), NaOCl solution immersion, or 105 of pre-fatigue cycles did not decrease the strength. Conclusion: Thermal stress, exposure to NaOCL, or 105 cycles of mechanical stress does not decrease bond strength of composite bonded to dentin as tested in four-point bending.
- Surgical treatment of benign parapharyngeal space tumours : presentation of two clinical cases and revision of the literature(2008) Fernández Ferro, Martín; Fernández Sanromán, J.; Costas López, Alberto; Sandoval Gutiérrez, J. M.; López de Sánchez, AnnahysParapharyngeal space (PPS) tumours, most of them benign, account for some 0.5% of tumours of the head and neck. The importance of these tumours lies mainly in two aspects: on the one hand, the difficulty of early diagnosis, due to the lack of symptoms in the initial stages and, on the other, the extreme complications of performing surgery in the parapharyngeal region. This article discusses two clinical cases of parapharyngeal space tumours: a 45 year old man and a 60 year old woman. We revise the scientific literature and analyse the diagnostic and therapeutic procedures used, placing special emphasis on describing the different surgical approaches to the parapharyngeal space: transcervical, transcervical-transparotid, transpalatal or transoral, transmandibular and orbitozygomatic, all of which, used alone or combined with others, allow for complete resection of these tumours with minimum morbidity.
- Giant pleomorphic adenoma of the parotid gland(2008) Takahama Júnior, A.; Perez, Danyel Elias da Cruz; Magrin, José; Almeida, Oslei Paes de; Kowalski, Luiz PauloPleomorphic adenoma is the most common type of all benign and malignant salivary gland tumors, involving more frequently the parotid gland. It is a benign tumor with a slow and continuous growth that without treatment can reach an enormous size. We present a case of a giant pleomorphic adenoma in a 78-year-old man with a history of more than 30 years of a growing lesion in the parotid gland. Clinical examination revealed a giant mass on the right side of the face, however without any sign of facial nerve damage. The tumor was completely resected by total parotidectomy and preservation of the facial nerve. Macroscopically, the tumor measured 28cm and weighed 4.0 Kg. On the histological examination there was a predominance of epithelial and mioepithelial cells in a hyaline and mixoid stroma. It was not found any area of malignant transformation. In the post-operatory the aesthetic and functional results were excellent.
- Development of a computer application to help in the decision-making process in teaching dentistry(2008) Ríos Santos, José Vicente; Castello Castañeda, Coral; Bullón, PedroObjectives: This article describes the development of a computer application, Asiodint 1.0, whose objective is principally to help students and also newly qualified graduates in the decision-making process in a variety of clinical situations. The tree starts with an initial identification, naming the problem to be solved. It then follows a path via various stages (nodes), according to the responses to the variables which are important in this decision-making process, configuring a final outcome. Study design: A population of 90 individuals was chosen, divided without any specific criteria into three groups: A) students, B) qualified dentists with at least 2 years? and at most 5 years? professional experience, C) qualified dentists with more than 10 years? professional experience. Two clinical cases were designed for the themes used in the program (evaluation of an abutment tooth and treatment of an extracted tooth). The participants answered questions on the two cases first based on their knowledge and then with the help of the program, and were able to check the degree of agreement between their opinion and that offered by the program. Finally each individual had to fill in a questionnaire on their opinion of the program, additionally describing the advantages and drawbacks they found in the application and whether discrepancies were due to a fault in the program?s data base, an error by the individual or other reasons. Results: 100% of the participants stated that they would like to have this tool as an aid and 96.7% thought that it could be used to improve teaching. Conclusions: This program may be used repeatedly and at any time by students and teachers who so wish. This offers the advantage that it can be reviewed to reinforce information learnt by the students. The teaching staff can, however, if they so desire, design any theme they wish, increasing the efficiency and support capabilities of the program. Development of a computer application to help in the decision-making process in teaching dentistry. Program innovation.
- Bisphosphonate-related osteonecrosis of the jaw in patients with multiple myeloma(2008) Infante Cossío, Pedro; Cabezas Macián, Antonio; Pérez Ceballos, José Luis; Palomino Nicas, Julián; Gutiérrez Pérez, José LuisPurpose: To review the main clinical-radiographic, therapeutic, and preventive aspects of osteonecrosis related to intravenous bisphosphonate therapy in patients with multiple myeloma. Materials and methods: Between 2005 and 2006, we studied four patients with previous diagnosis of multiple myeloma treated with intravenous zoledronic acid, presenting nonhealing extraction sockets and intraoral exposed bone. We assessed the location of lesions, the relation with previous history of dento-alveolar surgery procedures, the clinical features, the treatments carried out, and the outcomes achieved. Results: All the patients were treated with chlorhexidine mouthwashes and oral amoxycilin-clavulanic acid for long periods of time. Two patients did not respond to the conservative management and needed surgical bone debridement. Conclusions: Dental extractions seem to contribute the development of osteonecrosis of the jaw in patients with multiple myeloma treated with intravenous bisphosphonate therapy. Whereas the pathologic mechanisms are not known, these patients should undergo frequent check-ups before, during, and after bisphosphonate therapy. The management must be symptomatic and palliative, including systemic antibiotics, control of pain, and chlorhexidine mouthwashes during long periods of time.
- Double teeth in primary dentition: Report of two clinical cases(2008) Cabral, L.A. Guimaraes; Firoozmand, Leily Macedo; Almeida, Janete DiasOdontogenic anomalies can occur as a result of conjoining or twinning defects. These include fusion, gemination and concrescence. This article presents two case reports of double teeth. In the first case reported, a 4 -year-old white boy presented primary double teeth associated to the absence of the right permanent mandibular lateral incisor. In the second case, a 5-year-old white girl had a family history of anomaly in primary dentition. The girl and her mother presented double teeth in the primary dentition. Her mother showed hypodontia in the permanent dentition. Extra and intra oral clinical examination was made in both cases. Radiographic analyses showed the involvement of the permanent tooth. Authors conclude that double teeth in primary dentition have to be carefully analysed as they may be associated with anomalies in the permanent dentition. Correct diagnosis of the condition implicates in a better prognosis for the patient.
- Analysis of the knowledge and opinions of students and qualified dentists regarding the use of computers(2008) Castello Castañeda, Coral; Ríos Santos, José Vicente; Bullón, PedroDentists are currently required to make multiple diagnoses and treatment decisions every day and the information necessary to achieve this satisfactorily doubles in volume every five years. Knowledge therefore rapidly becomes out of date, so that it is often impossible to remember established information and assimilate new concepts. This may result in a significant lack of knowledge in the future, which would jeopardize the success of treatments. To remedy this situation and to prevent it, we nowadays have access to modern computing systems, with an extensive data base, which helps us to retain the information necessary for daily practice and access it instantaneously. Objetives: The objectives of this study are therefore to determine how widespread the use of computing is in this environment and to determine the opinion of students and qualified dentists as regards its use in Dentistry. Study design: 90 people were chosen to take part in the study, divided into the following groups (students) (newly qualified dentists) (experts). Results: It has been demonstrated that a high percentage (93.30%) use a computer, but that their level of computing knowledge is predominantly moderate. The place where a computer is used most is the home, which suggests that the majority own a computer. Conclusions: Analysis of the results obtained for evaluation of computers in teaching showed that the participants thought that it saved a great deal of time and had great potential for providing an image (in terms of marketing) and they considered it a very innovative and stimulating tool.
- Self-esteem and depression in patients presenting angle class III malocclusion submitted for orthognathic surgery(2008) Nicodemo, Denise; Pereira, Max Domingues; Ferreira, Lydia MasakoObjective: To assess self-esteem and depression in patients submitted for orthognathic surgery. Methods: Assessment was realized on 29 patients, male and female, aged 17 to 46, presenting Angle Class III malocclusion and referred for surgical treatment, during the preoperative (orthodontic preparation) and postoperative (six-month postoperative) periods. Either maxillomandibular or isolated procedures were performed. Two previously validated standardized measurement instruments for this area were used: the UNIFESP-EPM Rosenberg Self-Esteem Scale and the SelfReport Questionnaire-20 (SRQ-20). Descriptive and inferential statistical analysis (Repeated Measures Analysis of Variance and the Bonferroni test) verified possible interactions between the pre and postoperative periods, genders and types of surgery. Significance was determined at 5%. Results: Females showed improved self-esteem, presenting lower mean values after surgery (8.9 to 6.3). Regarding depression, a significant reduction in the number of depressive symptoms (p=0.002) occurred for female patients. Conclusions: Female patients presented improved self-esteem and diminished depressive symptoms due to surgical intervention; whereas male patients showed no alteration in self-esteem and depression with surgical intervention.
- Inferior alveolar nerve block anesthesia via the retromolar triangle, an alternative for patients with blood dyscrasias(2008) Suazo Galdames, Iván Claudio; Cantín López, Mario Gonzalo; Zavando Matamala, Daniela AlejandraOne of the most commonly used mandibular anesthesia techniques is the Spix technique, which is very useful in clinical practice, but is risky when the patient is a bearer of blood dyscrasias. Objective: The aim of this study was to present an alternative to the Spix technique in order to achieve troncular anesthesia of the inferior alveolar nerve. To this purpose, an infiltrative technique was designed to anesthetize the inferior alveolar nerve via the retromolar triangle. Study Design: This study included 40 patients with an average age of 23.65 years, 22 males and 18 females, who were previously evaluated with a vitalometer control, then subjected to the designed anesthetic technique. The effectiveness of the technique used to anesthetize the inferior alveolar nerve was evaluated by the results of tests using a vitalometer applied to a molar and a premolar on the anesthetized side after 5, 10 and 15 minutes. Moreover, the anesthesia was evaluated in mucosa innervated regions by the inferior alveolar, lingual and buccal nerves, and by having the patient relate the duration of the induced feeling of numbness. Results: The technique proved to be effective in 72.5% of the cases, with a latency of 10 minutes and an average duration of the anesthetic effect for 141.125 minutes. Moreover, anesthesia was obtained in the mucosa innervated regions by the inferior alveolar nerve in 72.5% of the cases, by the buccal nerve in 27.5% and in the innervated areas by the lingual nerve in 55% of the cases. Conclusions: The proposed technique, even when it proved to be less effective than the Spix technique, can be seen as a lower risk alternative for patients carrying blood dyscrasias and being subjected to dental procedures in mandibular teeth.
- Social demand in ambulatory oral surgery. Experience in the Master of Oral Surgery of Madrid Complutense University (Spain)(2008) Leco Berrocal, María Isabel; Martínez González, José María; Donado Rodríguez, ManuelObjectives. An evaluation is made of the surgical activity in the context of the Master of Oral Surgery (Madrid Complutense University, Madrid, Spain), together with an analysis of social demand in ambulatory oral surgery. Study design. A descriptive statistical analysis (frequency and contingency tables) is made of the different parameters relating to the activity carried out in this postgraduate master during two academic years. Results. A total of 6750 interventions were carried out in 5877 patients. Females predominated over males (62% versus 38%), and 59.2% of the subjects were in the 21-40 years age range. The most common procedure was tooth extraction (91%); of these, 83.5% corresponded to molars. Other extractions accounted for 5.5%, while impacted canines represented 1.2% of the interventions, cyst removal 1.2%, and periapical surgery 0.5%. Conclusions. Our results show third molar extraction to be the most commonly demanded intervention in ambulatory oral surgery.
- The meridian incision : a technical modification in the conservative surgery of the impacted maxillary canine(2008) Pascual Gil, J.V.; Marqués Mateo, M.; Puche Torres, M.; Miragall Alba, Luis; Iglesias Gimilio, Maria Eugenia; Villar Puchades, R.We describe a technical modification of the apical repositioning flap in the conservative surgical treatment of the impacted canine in buccal position. This amendment improves the tooth?s eventual visualization, thus permitting a better evolutive follow-up of its eruption process and, most importantly, providing the tooth with buccal attached gingiva that will accompany it in its downward progression, procuring a cervical contour without retraction, a satisfactory esthetic outcome and a physiologically correct periodontal ridge. The traditional apical repositioning flap also bestows the canine with attached gingiva; however, since the flap is sutured apically and its width is significantly smaller than the remaining surgical defect, the wound?s closure is compromised at one of its edges and often requires healing by second intention at an undesired location next to the buccal sulcus. We believe the introduction of the meridian incision is a simple, expedient technical modification with efficient results.
- Clinical prevalence of drooling in infant cerebral palsy(2008) Morales Chávez, Mariana Carolina; Nualart Grollmus, Zacy Carola; Silvestre Donat, Francisco JavierObjective: To determine the prevalence and severity of drooling in infant cerebral palsy (ICP) and analyze the possible surgical, pharmacological, myofunctional and novel alternative approaches to treatment of this disorder. Methods: A clinical study is made of a group of patients with ICP (cohort) and aged between 4 and 34 years, visiting a dental clinic for disabled patients. The classification of Thomas-Stonell and Greenberg was used to assess the presence and severity of drooling. Results: Of the total of 50 patients evaluated (52% males and 48% females), 58% presented drooling (mild in 44.4% and moderate to severe in 27.7%). Conclusion: Over half of the patients with ICP presented drooling. Effective options are therefore needed for the treatment of this problem, which poses a series of negative effects for both patients and their care givers.
- High resolution image in bone biology II : Review of the literature(2008) Cano Sánchez, Jorge; Campo Trapero, Julián; Vaquero, Juan José; Martínez González, José María; Bascones Martínez, AntonioBone microstructure has usually been assessed by obtaining samples invasively and analyzing them with conventional histomorphometric methods. Improvements in high-resolution image acquisition systems have enabled non-invasive assessment of bone morphology and a more precise 3-D evaluation by means of ?virtual biopsies?, permitting bone assessment in regeneration or remodeling processes. Among other applications, this imaging technique can be used for the ultrastructural analysis of bone and for studies of regeneration techniques, biomechanics in bone physiotherapy, and periimplant bone healing. This review describes the different applications of high-resolution imaging techniques in bone biology and the morphometric results obtained with these images in mechanobiology in general and maxillary bone in particular.
- Control of drooling using transdermal scopolamine skin patches : a case report(2008) Mato Montero, Abigail; Limeres Posse, Jacobo; Tomás Carmona, Inmaculada; Fernández Feijoo, Javier; Diz Dios, PedroTransdermal scopolamine has been shown to be very useful in the management of drooling, particularly in patients with neurological or neuropsychiatric disturbances or severe developmental disorders. In this paper, we present the case of a 24-year-old patient with a diagnosis of cerebral palsy and a severe problem of drooling, exacerbated by marked mandibular prognathism. After exclusion of other therapeutic alternatives, it was decided to use sustainedrelease transdermal scopolamine patches (Scopoderm TTS). This technique consists of the application every three days of a patch with 1.5 mg of scopolamine in the area of the mastoid apophysis; the patch releases a dose of 0.5 mg of the active substance over each 24 hour period. The patient underwent periodic clinical and laboratory follow-up over a period of three years, achieving satisfactory results with no significant undesirable effects.
- Gene therapy in the management of oral cancer: Review of the literature(2008) Ayllón Barbellido, Sonia; Campo Trapero, Julián; Cano Sánchez, Jorge; Perea García, M.A.; Escudero-Castaño, Nayra; Bascones Martínez, AntonioGene therapy essentially consists of introducing specific genetic material into target cells without producing toxic effects on surrounding tissue. Advances over recent decades in the surgical, radiotherapeutic and chemotherapeutic treatment of oral cancer patients have not produced a significant improvement in patient survival. Increasing interest is being shown in developing novel therapies to reverse oral epithelial dysplastic lesions. This review provides an update on transfer techniques, therapeutic strategies, and the clinical applications and limitations of gene therapy in the management of oral cancer and precancer. We highlight the combination of gene therapy with chemotherapy (e.g., 5-Fluoracil) and immunotherapy, given the promising results obtained in the use of adenovirus to act at altered gene level (e.g., p53). Other techniques such as suicide gene therapy, use of oncolytic viruses or the use of antisense RNA have shown positive although very preliminary results. Therefore, further research into these promising gene therapy techniques is required to assess their true efficacy and safety in the management of these lesions.
- Extensive myiasis infestation over a squamous cell carcinoma in the face : case report(2008) Gabriel, João Guilherme; Marinho, Sandra Aparecida; Verli, Flaviana Dornela; Krause, Ricardo Guilherme; Yurgel, Liliane Soares; Cherubini, KarenHuman myiasis is a parasitosis found in tropical and underdeveloped countries. It usually affects the elderly, unhealthy and mentally disabled individuals. It is caused by dipterous that lay their eggs in necrotic or infected tissues, although areas of the body that are apparently healthy can also be affected. Frequently the fly deposits several eggs on the peripheral parts of scratches and wounds. The treatment of myiasis involves mechanical removal of the larvae with hemostatic pincers. Larvae rupture must be avoided. Application of topical ether or similar volatile substance is useful. Preventive approach measures, including basic health care, hygiene, access to primary health service, and safe water and drainage, are fundamental to prevent human myiasis. The authors present a case report of myiasis infestation over an extensive head and neck squamous cell carcinoma from a 72-year-old patient living in a rural area. Approximately 200 larvae were removed and the patient was taken to the hospital?s head and neck surgery service.
- Solitary angiokeratoma of the tongue(2008) Sion Vardy, Netta; Manor, Esther; Puterman, Max; Bodner, LipaAngiokeratoma is a rare cutaneous lesion. It can be either a generalized systemic form, pesenting as multiple asymptomatic papules on the skin, associated with metabolic diseases or a solitary cutaneous form. Oral cavity involvement is more common in the systemic form, as a part of a more generalized cutaneous disease, but very rare in the localized form of angiokeratoma. A 45-year-old female presented with a painless lesion on the tongue of one months duration, which bled occasionally. On clinical examination, a lesion of approximately 5 mm in diameter was observed on the left surface of the tongue. The lesion was purple in color with a granulomatous appearance . There were no other changes in the oral mucosa. On dermatologic examination, no angiokeratomas were found, anywhere on the skin. The lesion was excised under local anesthesia. The histologic diagnosis was angiokeratoma. A case of a solitary angiokeratoma of the tongue is reported. We report here the third intra-oral case and the second case in the tongue with solitary angiokeratoma.
- Reverse smokers?s and changes in oral mucosa : Department of Sucre, Colombia(2008) Álvarez Gómez, Gloria Jeanethe; Alvarez Martínez, Efraín; Jiménez Gómez, Raúl; Mosquera Silva, Yolanda; Gaviria, Ángela María; Garcés Agudelo, Adriana; Alonso Duque, Alexander; Zabala Castaño, Alexander; Echeverri González, Elizabeth; Isaac-Millán, Melissa; Ramírez Ossa, DianaObjectives: This work is intended to establish the prevalence of reverse smokers at the villages of Hato Nuevo, San Francisco and Cayo de Palma, Department of Sucre, Colombia, characterizing their socio-culture conditions, clinical and histological changes in the oral mucosa. Design of study: A descriptive study was done through a home to home inquiry to select the people with inclusion criteria for a posterior clinical test and a biopsy of the affected oral mucosa. Results and conclusions: Reverse smokers?s prevalence was from the 15%, mainly women (p<0.001) with an age average of 59.3 years. The lesions were classified clinically in mild, moderate and severe changes. Tongue moderate lesions presented the higher frequency (80%), followed by severe lesions on palate (74%). Oral cancer prevalence was 10.8% in the San Francisco village and 18.2% in Cayo de Palma village, no new cases were reported in Hato Nuevo village. This was the highest prevalence reported in comparison with other studies with similar population. The clinical and histological findings agree with the reported in literature, no relation was found between the degree of clinical severity and the dysplasia itself. Cases of oral submucous fibrosis-like lesions were found, which had never been reported in Latin America. Further studies are required in order to decrease the morbidity for this habit and to identify other related risk factors.
