Scielo RSS <![CDATA[RSBO (Online)]]> vol. 13 num. 1 lang. pt <![CDATA[SciELO Logo]]> <![CDATA[<b>Orthognathic surgery impact on quality of life</b>]]> <![CDATA[<b>Influence of atmospheric temperature on the occurrence of irreversible pulpitis clinical cases</b>]]> Introduction and Objective: The present study aimed to examine the correlation between atmospheric temperature and the occurrence of irreversible pulpitis. Material and methods: Data was collected from the Department of Dentistry, Moinhos de Vento Hospital, Porto Alegre between July 2011 and December 2012. A total of 52 pulpitis clinical cases were examined in 529 days in this study. Data on the atmospheric temperature in Porto Alegre on each day was collected from the Porto Alegre Meteorology Institute. Results and Conclusion: Correlation analysis of the temperature data and pulpitis cases was conducted using Student's t-test, with a significance level of 5%. Although no correlation was observed between the occurrence of irreversible pulpitis and atmospheric temperature, the incidence rates were higher on days when the average temperature was greater than 25ºC. <![CDATA[<b>Clinical and radiographic assessment of root canal treatments performed by dental students</b>]]> Introduction: Retrospective assessment of procedures performed in dental school clinics is a valuable tool to critically assess the teaching/ learning process. Objective: This retrospective study assessed the success rate of root canal treatments executed by dental students during a two-year time span. Material and methods: Patients who had undergone root canal treatments at the clinics of the School of Dentistry of Unochapecó during 2011-2013 were recalled for assessment of the quality of the procedure and the associated coronal restoration. The quality of the root canal treatments was assessed clinically and radiographically, while the coronal restorations were assessed clinically by a trained dental student. Data were analyzed by descriptive statistics and chi-square test (α=0.05). Results: Thirtytwo patients returned for evaluation of 38 root canal treatments and coronal restorations. The success of root canal treatments was 89.5%, while 78.5% of the coronal restorations were considered successful. A significant association was observed between the success of the root canal treatments and the quality of the coronal restoration (p<0.005) and the apical length of the root canal filling (p<0.011). The presence of flaws within the filling material was not significantly associated to the success/failure of the root canal treatment (p=0.459). Conclusion: A high success rate of root canal treatment performed by dental students at an average 13-month evaluation period was observed. An adequate coronal restoration and a good apical sealing is required for a good prognosis of teeth undergoing root canal treatment. <![CDATA[<b>Effect of the use of different periodontal curettes on the topography and roughness of root surface</b>]]> Introduction: Periodontal scaling is the treatment approach most used to remove dental calculus, plaque, and altered cementum from root surface. During root decontamination, the instruments used leave the root rougher and more irregular. Objective: To verify the root surface after mechanical scaling with different Gracey curettes steel through SEM and superficial roughness analyses. Material and methods: Twelve teeth were embedded in acrylic resin. The teeth were instrumented with new Gracey curettes Gracey 5/6 from different brands. The groups (n=2) were divided into: control, no instrumentation (GC); carbon steel (CSN); stainless steel Neumar (SSN); stainless steel Millenium (SSM); premium steel Neumar (PSN); Hu-Friedy (HF). An area measuring 3 x 3 mm2 was marked on the distal surface of the root to guide the Reading of the root topography on SEM and rugosimeter. The data were analyzed by a single examiner previously calibrated. SEM analysis was based on scores of the root surface smoothness after scaling. We analyzed the parameters of mean roughness (Ra) and mean roughness deepness (Rz). SEM data were submitted to statistical analysis through Fisher's exact test (p < 0.002) and roughness data by Anova followed by Student t test. Results: The quality of the active surface of the curette demonstrated by SEM and roughness analyses that it can exert difference in the result regarding to the homogeneity produced after the scaling of root surface. Group SSM demonstrated a homogenous root surface (score 0) in SEM and better smoothness in rugosimeter analysis. Conclusion: According to com the methodology used, the group of curettes that provided better smoothness of root surface after scaling was SSM. <![CDATA[<b>Measurement of Spee curve in individuals with temporomandibular disorders: a cross-sectional study</b>]]> Introduction: Several factors are cited as capable to influence the development of Temporomandibular Disorders (TMD), among them, the psychological, systemic, genetic, and occlusal factors. The curve of Spee is the factor directly related to the TMJ. However, the combination of variations in amplitude, and the presence of signs and symptoms of TMD have not been investigated. Objective: The aim of this study was to measure the curve of Spee in patients with TMD, through the use of study models, comparing these values with the different clinical and symptomatic presentations of such individuals. We evaluated 198 models of patients treated at the care service for patients with TMD at UFJF. The maximum depth of the curve was determined by the sum of the distances between the lowest part of the buccal cusp of the posterior teeth of each hemiarch to a reference plane, using a caliper to measure. The following factors were considered: gender, presence of myalgia (temporal, masseter, medial pterygoid, lateral and sternocleidomastoid muscles) and TMJ arthralgia, and the presence of occlusal interferences and parafunctional habit of bruxism. For statistical analysis, we used T-test and ANOVA test with a significance level of 5%. Conclusion: There was a statistically significant association between the presence of occlusal interferences and changes in the curve (p = 0.01). There was no association between the following factors: the presence of myalgia and/or arthralgia, gender, achievement of bruxism, and the type of TMD presented with changes in the Spee curve. <![CDATA[<b>Prevalence of oral diseases, socioeconomic indicators, and provision of dental services: exploring nexus</b>]]> Introduction and objective: A number of studies have associated prevalence of oral diseases, socioeconomic factors, and dental services in Brazil, and this study aimed to review, in narrative mode, the causal nexus between them. Literature review: The high prevalence of dental problems such as caries and periodontal disease is still found worldwide, despite the significant reduction. The impacts resulting from tooth loss are not limited to the physical condition, but also to the social aspects. The association between oral diseases and microbiological and hygiene factors is recognized, but deficient as explanatory power. The discussion of correlated factors, associated with the development of relevant oral diseases and marking existing inequities, must be expanded. Conclusion: The factors studied showed an involvement, indicating that inequities in oral health are striking in the Brazilian population, with serious consequences. Efforts are needed to control and modify this context. <![CDATA[<b>Bilateral maxillary osteoplasty with esthetic purpose in patient with secondary hyperparathyroidism-related brown tumor: case report</b>]]> Introduction and Objective: To report a case of a patient with secondary hyperparathyroidism that developed brown tumour in bilateral maxilla surgically managed with bilateral osteoplasty for aesthetic reasons. Case report: A 46 years-old woman patient with chronic kidney disease with complain of a painless bilateral growth on the maxilla, beginning 10 years before that ceased after surgical removal of the parathyroid eight years before. A CT scan showed a diffuse and heterogeneous bone lesion, with lytic areas and increased multilobulated volume on the maxilla, bilaterally. The surgery was an osteoplasty of the maxilla bone and performed under general anaesthesia. At 16-month follow-up, no recurrence was observed and the patient is satisfied with aesthetic and functional results. Conclusion: Secondary hyperparathyroidism related with oral brown tumour is a rare condition that affects function and aesthetic. The case reported in this paper was appropriately managed, achieving patient expectation and improving her life quality. <![CDATA[<b>Thermoplastic endodontic obturation - TC system: case report</b>]]> Introduction: The TC system, developed in 2002, allows the endodontic filling by means of a non-conventional technique that uses gutta-percha at alpha phase, thermoplasticized in its own oven, placed into canal through a McSpadden compactor, without using a main cone. Objective: The aim of this case report was to show the TC system used for root canal filling. Case report: Three teeth of a patient was indicated for endodontic treatment, so TC system was used for the root filling. Conclusion: This technique showed to be effective for the root canal filling. <![CDATA[<b>Surgical treatment of mandibular condyle fracture with bicortical screws: case report</b>]]> Introduction: Mandibular condyle fractures are, of all facial fractures, those with the greatest controversies in relation to its conduct. Patient systemic condition, location and displacement degree of the fracture, mouth opening amplitude, and occlusion alteration are some factors that influence on the decision on conservative or surgical treatment. Pain, mandibular movement limitation, altered dental occlusion, and facial asymmetry are signs and symptoms that indicate condylar fracture. The surgical treatment consists of surgical fracture reduction and subsequent fixing through titanium miniplates and\or screws. Objective: The aim of this study was to report the case of a patient who had parasymphyseal fracture associated with left mandibular condyle fracture, presenting limited excursive movements of the jaw, pain in function, altered dental occlusion, and bruising on chin region. Case report: Due to the type of fracture and patient systemic condition, we decided to open reduction of fractures and stable internal fixation. Conclusion: At 12-month follow-up, the patient showed significant improvement in both clinical and functional condition, demonstrating the effectiveness of the treatment method and technique. <![CDATA[<b>Giant sialolith of submandibular gland: case report</b>]]> Introduction: The sialolith, also known as saliva stone or sialolithiasis is a calcified structure which develops inside the salivary ductal system or on the salivary gland parenchyma; it grows gradual, asymptomatic, and slowly. Most of the stones are sized less than 10 mm and only 7% of them are larger than 15 millimeters; those are considered giant salivary gland stones. Objective: This study aimed to report a case of two sialoliths that have merged, forming a giant sialolith, located in the Wharton duct in the left submandibular gland. Methods and Results: Clinical diagnosis was confirmed by occlusal and panoramic radiographs. A surgical removal was performed with intraoral incision under local anesthesia, through sialolith anchorage by suture thread and removal of two sialoliths, sized about 13 mm and 16 mm. Marsupialization suture was performed at the local where the incision was made, forming a new gland duct. Conclusion: The sialolithiasis treatment methods are very different and should be taken into account the affected gland, size and location of sialolith, always opting for the more conservative methods. <![CDATA[<b>A simplified restorative technique of fractured maxillary anterior teeth</b>]]> Introduction: Fractures of the anterior teeth consists of a clinical condition that generates not only aesthetic and psychological problems, but may also cause dental pain. Thus, the affected teeth should be treated as urgencies in dental offices and their resolution whenever possible should be in a single session. Direct resin composite restorations should wherever possible be preferred due to the speed and possibility of obtaining good results. Objective: The objective of this case report is to describe the clinical sequence for restoration of a maxillary central incisor that presented a crown fracture using an immediate insert technique for resin composite (a "free hand" technique) with a modification to obtain dentin layer. Case report: A patient sought treatment after she fractured tooth #21. The restoration was performed with resin composite using the immediate technique. To facilitate the layering technique, the immediate insertion technique was changed for making the dentin lobes with the aid of a Teflon tape and the support with the index finger. Conclusion: The restoration of fractured anterior teeth can be performed quickly with the use of resin composites of different opacities and the use of the technique of immediate insertion proposed in this case report. <![CDATA[<b>Crown lengthening surgery and transurgical restoration</b>]]> Introduction: The crown lengthening surgery and the transurgical restoration are alternative procedures to enable the restoration of teeth inaccessible to the conventional techniques and restore the lost biological space. Objective: This study aimed to present clinically the reconstruction of a right maxillary second molar through crown lengthening surgery associated with transurgical restoration with composite resin in a patient treated in the Integrated Clinics of the University of Ribeirão Preto. Case report: Patient E.H.C.V., female, aged 51 years, attended the dental clinic of the University of Ribeirão Preto. The anamnesis showed a favorable health history and the clinical examination showed great tooth crown destruction of tooth #17. The treatment planning included the crown lengthening periodontal surgery with regularization of alveolar bone on the buccal surface of tooth #17, rubber dam isolation, the restauration of the compromised area with composite resin, and suture in the same session. After 7 days, the sutures were removed and the restoration polished. Conclusion: It can be concluded that the use of this technique is a viable, fast, and satisfactory solution, with good results, favoring the health and aesthetics, returning function and better social life to the patient.