Effect of crown-to-implant ratio on peri-implant stress: a finite element analysis

The aim of this study was to evaluate stress distribution in the fixation screws and bone tissue around implants in single-implant supported prostheses with crowns of different heights (10,12.5, 15 mm crown-to-implant ratio 1:1, 1.25:1, 1.5:1, respectively). It was designed using three 3-Dmodels. Each model was developed with a mandibular segment of bone block including an internal hexagon implant supporting a screw-retained, single metalceramic crown. The crown height was set at 10, 12.5, and 15 mm with crown-to-implant ratio of 1:1, 1.25:1, 1.5:1, respectively. The applied forces were 200 N (axial) and 100 N (oblique). The increase of crown height showed differences with the oblique load in some situations. By von Mises'criterion, a high stress area was concentrated at the implant/fixation screw and abutment/implant interfaces at crown-to-implant ratio of 1:1, 1.25:1, 1.5:1, respectively. Using the maxiinum principal criteria, the buccal regions showed higher traction stress intensity, whereas the distal regions showed the largest compressive stress in all models. The increase of C/I ratio must be carefully evaluated by the dentist since the increase of this C/I ratio is proportional to the increase of average stress for both screw fixation (C/I 1:1 to 1:1.25 ratio = 30.1% and C/I 1:1 to 1 :1.5 ratio = 46.3%) and bone tissue (C/I 1:1 to 1:1.25 ratio = 30% and C/I 1:1 to 1:1.5 ratio = 51.5%). (C) 2014 Elsevier B.V. All rights reserved.

Avaliação do conhecimento sobre a infecção HIV de estudantes de odontologia antes e após palestra informativa

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Impacted permanent incisors associated with compound odontoma

Odontomas are the most common odontogenic tumours of the maxillary bones, characterised by a slow growth and benign behaviour. They are usually small, asymptomatic and diagnosed after routine radiographic examination. The aim of this study was to report a case of a compound odontoma in the anterior maxilla of a 7-year-old girl, which was causing the impaction of the maxillary right central and lateral incisors, as well as the prolonged retention of the corresponding primary teeth. We also aimed to review the literature about these tumours, since they are not part of the dentist's day-to-day clinical practice. The clinical and radiographic features, the diagnosis and treatment of the case were discussed in this work.

Qual a importância da odontologia hospitalar?

Hospital Dentistry can be understood by the care of the oral abnormalities that require intervention of multidisciplinary team for highly complex treatment. Dentistry integrated into the hospital, allows a better performance in the commitment to patient care and also expanded oral health care to the population. However, even among dentists, opinions differ on the subject. The participation of the dentist in an outpatient or in hospital, aims to collaborate, deliver and add more strength to what characterizes the new identity of the hospital. The aim of this study was to review the literature about the importance of ministering concepts of Hospital Dentistry for the exercise of this profession and how the situation is nowadays.

Grau de conhecimento dos cirurgiões-dentistas sobre odontologia hospitalar

The aim of this research was to investigate the knowledge, judgment, monitoring and execution of the dentists regarding Hospital Dental Care. Five hundred dentists from Araçatuba (São Paulo state) answered a questionnaire. The results showed that 49% of professionals have never had experience at hospitals and 64% affirmed that this content is poorly approached in graduation. Also 46% of respondents have no interest or don’t think necessary acting in a hospital and 24% believe that this care is done by specialists only. It can be suggested that there is a lack of knowledge about Hospital Dental Care, thus the dentist shall be instructed since academic training for insertion into the hospital team.

Fechamento de fístula buco-sinusal usando tecido adiposo bucal

The Oro-antral Fistula is a common pathologic event, which occurs an opening or communication of the maxillary sinus with the oral cavity through dental extractions of upper posterior elements whose roots have close relationship with the maxillary sinus. This study aims to clarify the Surgeon Dentist about the possible etiological factors responsible for Oro-antral Communication, to identify its clinical and radiographic signs, to explain the Buccal Fat Pad’s anatomy and functioning and to describe the surgical technique adopted front of these cases. For this, the authors present a case of a patient who had a fistula in the region where there was a dental extraction of the upper posterior element. The treatment of Oro-antral Fistula using the buccal fat pad provides to be a safe and effective surgical method, because this element presents a rich blood supply and easy access. Many authors have found that this method have a broad application, large index of success, lower risk of infection, provides a comfortable post-operative for the patient. However, it needs to be done properly so that you have minimum incidence of failures, and this requires some caution on the part of professional.

Estratégias de sustentabilidade na prática odontológica

Dentists have widely discussed environmental issues with a view to the implementation of sustainability strategies in dental practice. It is unacceptable the practice of dentistry today as merely the solution of dental problems. The Dentist has a social responsibility to incorporate into your daily work concrete actions to reduce the impact of its production process. The purpose of this study is to characterize the development and application of performanceoriented model of social responsibility in dental practice, built to preserve the environmental cause in dentistry in order to trace change scenario that allows the environmental management without compromising the quality of services offered.

Dor orofacial

The orofacial pain, also known by the generic term dysfunction, is highly prevalent in the general population, causing great discomfort to the patients. For this reason, there is great importance of dentist’s participation in practice and in the process of proper diagnosis of this disease, which in modern times has become increasingly important as guides the best treatment. Thus, this study was aimed to review the main causes, diagnosis, main symptoms and treatment modalities, to serve as a guide to the dentist. Moreover, it also aims to review the main etiologic factors commonly associated, as emotional stress and muscular hyperactivity, to clearly identify signs and symptoms, so the dentist is able to realize simple treatment in your particular office or recognizes complex cases that could be send for treatment to multidisciplinary teams.

Prova estética e funcional: uma decisão em conjunto

An important phase of rehabilitation treatment, is the aesthetic and functional testing, performed with the patient. Its relevance is because at this time it’s possible to have a very faithful preview of the final result of the prosthesis, but, if necessary, still allow changes. Therefore, the objective of this review is to describe didactically the clinical steps and factors that should be examined by the dentist at the moment of aesthetic and functional testing of a complete denture. This clinical stage basically involves four requirements to be analyzed: mechanical, functional, aesthetic and phonetic. After the jointly analysis with all the requirements, the patient must approve, preferably in writing, the completion of the prosthesis. In case of need for any changes, this is when it should be performed, followed by new aesthetic and functional testing. It should be noted that the patient’s opinion is always sovereign in deciding to end the denture.

Odontologia baseada em evidências: otimizando a prática e a pesquisa

Clinical decisions in dentistry are often based on the knowledge obtained during graduation, clinical experience, information shared with colleagues and professor, textbooks, seminars, conferences and continuing education courses. However, it is necessary to know if this information is derived from scientifically validated researches since too much information may complicate this process. Initially in medicine and later in other health areas a method which enables a critical evaluation of scientific papers related to a specific issue and also, whenever it is possible, an evaluation of the results by meta-analysis,was developed by Cochrane in order to reduce the bias towards all information obtained. The aim of this work is to present some aspects of the Evidence Based Dentistry (EBD) and to show how this methodology can be used to better substantiate scientifically the clinical decision of the dentist and improve researches design with scientific validity. The paper discusses editorial trends focused on the EBD, shows the differences between a systematic and a conventional review, describes data about Cochrane and the advantages of scientific evidence synthesis and the implications of EBD for clinical practice and research as well as recommendation grades and evidence levels of general scientific studies.

Temporomandibular disorders in females: acupuncture compared to occlusal splint

To compare the effect of acupuncture and occlusal splint in the treatment of temporomandibular disorders (TMD) in female patients.Method: Forty-eight female patients (mean age of 39.3±6.8 years) with diagnosed pain in muscles or joint according to RDC/TMD criteria were attended at UNESP - Aracatuba Dental School. Including criteria were reported pain in the chewing muscles and/or in the temporomandibular joint measured by a visual analogue scale (range from 0 to 10) and a reported reduction of the maximum mouth opening. Excluding factors were major occlusal problems, systemic diseases, pregnancy and age below 18 years. After randomization, the first group was treated with acupuncture performed by instructed dentist. The second group was treated with occlusal splint. The outcome variables were assessed at baseline (prior to the first treatment session) and after 1, 3 and 6 months. Primary criteria of success were improvement of mouth opening and pain reduction.Result: Acupuncture group exhibited chewing pain decrease from 5 (at baseline) to 1, 2 and 1 after 1, 3 and 6 months, respectively. In the splint group, chewing pain decreased from 4 to 2, 1 and 2 after 1, 3 and 6 months, respectively. The mouth opening (in mm) increased from 28 (at baseline) to 42, 44 and 46 after 1, 3 and 6 months, respectively in the acupuncture group. In the splint group, mouth opening improved from 29 to 40 after 1 month, and to 43 and 42 after 3 and 6 months. A significant pain reduction was noted for both groups when compared to the baseline (p<.001; Wilcoxon test). Acupuncture group had a significant clinical improvement of opening mouth (Mann-Whitney). Conclusion: The present outcomes suggest a positive association among acupuncture and occlusal splint on the reduction of chewing pain. Acupuncture was more effective in the mouth opening increase.

Humanização na assistência odontológica de pessoas com deficiência, através do projeto Cão Cidadão-Unesp

The Araçatuba School of Dentistry along with the Veterinary Medical Course, both from UNESP, develop the Extension Project called “Cão Cidadão UNESP” (Unesp Citizen Dog), which is accomplished in some assistance societies, including the Dental Assistance Center to Persons with Disabilities (“Centro de Assistência Odontológica à Pessoa com Deficiência” - CAOE-UNESP). This project develops a multidisciplinary work involving professionals and students from health sciences. The project aims at developing activities to relieve stress, fear and anxiety of patients with disabilities in the moment that precedes the dental treatment. The team performs procedures such as walking with the dogs and patients, toothbrushing the dogs so the patients can see it, in order to learn and motivate themselves, dressing the dogs with some accessories such as white clothes, mask and cap, to associate with image of the dentist, making this relationship more pleasant and welcoming. It is evidenced, through reports of professionals, that the patients become calmer and more collaborative with the dentists, distracting them from the treatment focus and creating a positive bond. It should be noted that this experience has contributed to motivate the professionals to introduce new techniques for dental approach, such as Animal Assisted Therapy. It also shows that animals can be very helpful in treating people with disabilities, because they offer a lot of love, companionship and provide moments of joy and happiness to the participants.

Diabetes mellitus: avaliação do conhecimento de cirurgiões-dentistas em municípios de três estados brasileiros

Introduction: Pathological changes in the bucal cavity associated with Diabetes mellitus (DM) may include gingivitis, periodontal disease, salivary gland dysfunction and xerostomia (dry mouth), susceptibility to bucal infections, burning mouth syndrome, and altered taste. Objective: This study assessed the technical and scientific knowledge of dentists working in primary care in the National Health System (SUS) on the DM. Material and method: The study was conducted in the municipalities of Birigui-SP, Maringá-PR and TrêsLagoas-MS, with the participation of 76 dentists working in the SUS primary care system.These professionals agreed to answer to a questionnaire developed for this study and the results of the questions were submitted to a quantitative analysis. Result: Showed that 94.7% were in contact with diabetic patients; 97.4% know what is DM; about other types of DM, 77.6% said they know, the most mentioned (by 55.9%) was the gestational DM. The DM2 was indicated as the most prevalent by 59.2%; the normal range of fasting blood glucose level was quoted correctly by 2.6% of the participants; obesity was reported by 98.7% of participants as a risk factor for DM; 96.0% stated correctly what are the main signs and symptoms related to Diabetes; periodontal disease was reported by 92.1% as an bucal manifestation in diabetic patients. Conclusion: The dentist needs to develop specific knowledge about DM, being able to identify normal levels of blood glucose and ready to identify and meet the bearer of DM.

A cárie dentária e a imagem do dentista sob a ótica infantil

The aim of this research was to study dental caries and the image of infant about dentists. Were selected randomly, 92 students from a two publics schools and 88 from a two privates schools, in the city of Araçatuba, São Paulo State. The children to answer a questionnaire composed of 13 questions and to make a drawing to represent a dental caries. The results were accomplished by using the statistical analyses “ Qui-square “ test and the “ Fisher “ test. The drawings were analyzed by a specialist psychologist. We concluded that the image about the dentist, for the children, is highly favorable and most of them know what it is the dental caries and how it is caused.

Conhecimento sobre saúde bucal e práticas desenvolvidas por professores do ensino fundamental e médio

Introduction: The oral health education is a process that aims to transform attitudes and behaviors and to form habits for the benefit of individual health. For this to occur, it is necessary to strengthen and continuous repetition, as possible in the school environment. Objective: To analyze teachers’ knowledge about oral health, practices developed in the school environment, as well as the participation of dentists in guiding teachers of primary and secondary schools. Subjects and method: We used a semi-structured questionnaire with open and closed questions about teacher training, received guidance on oral health during their training, development of oral health issues in the classroom and knowledge on the subject . Results: Of the total respondents (n = 221), only 77 (34.8%) said they had guidance on oral health in their training to be a teacher. 70 (31.7%) said they did not develop oral health issues in the classroom and 91 (41.2%) stated no interaction between dentist and professor. We observed deficiency in teachers’ knowledge about certain issues related to dental health. There was statistically significant association between the dentist’s guidance to teachers and the development of oral health actions and the teacher’s knowledge about the location of the first permanent molar eruption (p <0.01). Conclusion: This study conclude that although most educators develop educational practices on oral health in the school environment, there is a deficiency in understanding by teachers of certain subjects, making it necessary a greater participation of the dentist in the transmission of technical and scientific knowledge to them.