Complete replacement resorption after replantation of maxillary incisors: Report of case

PubMed ID: 10551136This article describes the treatment of a 17-year-old patient with complete root resorption of the maxillary permanent central and lateral incisors following avulsion and replantation seven years ago. The most important factor influencing the prognosis of replanted teeth is the status of the periodontal ligament (PDL). As a result of replantation, the PDL cells necrosed and tooth replacement resorption occurred. The main factors, which affected the resorption after replantation and survival of PDL cells, could be summarize as; dry extraoral time greater than 30 minutes, the kept tooth in a dry environment, touching the cementum surface, and splint treatment for a prolonged time. Since complete root resorption was found in our case, these factors probably also occurred

Bruxism in Rett syndrome: A case report

PubMed ID: 10204460Rett syndrome is a unique and puzzling disorder noted in females and is possibly caused by fundamental failures in critical brain connectivity during early infancy. The most frequent habits in Rett syndrome are hand sucking or biting, bruxism and mouth breathing. Children with musculoskeletal disorders and children who suffer from mental retardation commonly grind their teeth. A five year old female case with Rett syndrome is presented with significant bruxism in this article

Evaluation of Maxillary Sinus Width and Lateral Wall Thickness Using Cone - Beam Computed Tomography

WOS:000615257800004Objective: This study aimed to measure the lateral wall thickness (LWT) and width of the maxillary sinus using cone-beam computed tomography (CBCT) to prevent intra- and post-operative complications by formulating a new sinus classification. Materials and Methods: Residual ridge height, maxillary sinus width (SW) and lateral wall thickness (LWT) were measured by analysing CBCT scans from 246 edentulous sites. The SW and LWT were measured at 3 mm and 5 mm, respectively, from the sinus floor. The mean SW was stratified by the residual ridge height (= 10 mm), study site and measurement level. Results: The mean SW increased at molar sites and at sites with lower residual ridge heights. Sinuses were categorised based on the 33rd and 67th percentile SW values at 3 mm and 5 mm, respectively. The mean value at the lower boundary was 9.33 (1.85) mm, with the 33rd and 67th percentiles being 8.62 and 10.11 mm, and the mean value at the upper boundary was 11.72 (2.20) mm, with the same percentiles being 10.81 and 12.59 mm, respectively. The mean LWTs at 3 and 5 mm were 1.67 and 1.56 mm, respectively. Conclusion: The proposed SW classification and LWT may help predict the difficulty of sinus elevation when selecting appropriate surgical approaches

Evaluation of the Effect of Apical Lesion on Mucosal Thickening and Thickness of Apical Bone Using Limited Cone-Beam Computed Tomography

WOS: 000441644300002PubMed ID: 30073994Objective: The purpose of this study was to evaluate the effect of periapical lesion size on the degree of mucosal thickening of maxillary sinus and thickness of apical bone using cone-beam computed tomography. Materials and Methods: In Group 1 (teeth with apical lesions), diameter of apical lesion, width of apical bone, thickness of Schneiderian membrane; for Group 2 (teeth without apical lesions), width of apical bone in long axis of root and thickness of Schneiderian membrane were measured on coronal and sagittal images. Results: Mann-Whitney U-test revealed no significant difference between two groups regarding mucosal thickening and apical bone measurements (P > 0.05). Wilcoxon signed-rank test showed no significant difference between the measurements in sagittal and coronal slices (P > 0.05). Conclusion: Results of the present study showed that Schneiderian membrane near the maxillary premolars and molars with apical lesions is not significantly thicker compared to teeth without apical lesions

Morphological Assessment of Maxillary Sinus Septa Variations with Cone-Beam Computed Tomography in a Turkish Population

Objective The purpose of this study was to measure and classify sinus septa variables (prevalence, numbers, heights, locations, orientations, and morphology) and to determine the effects of age, gender, and dental status on the presence of septa and also to evaluate the effects of septa on pathological mucosal thickening. Materials and Methods A total of 2,000 patients were analyzed through conebeam computed tomography (CBCT). The total of 500 maxillary sinuses were included in this study. The number of maxillary sinus septa was determined on axial sections of CBCT images. Their locations, orientations, and morphologies were determined on both the axial and sagittal sections, and their heights were determined only on the sagittal sections. The influence of age, gender, dental status, and pathological mucosal thickening on the presence of septa was statistically analyzed. Mann-Whitney U-test and descriptive statistics were used for statistical analysis. Results The average height of the determined 287 septa was measured as 7.36 mm. The highest rates of septa location, morphology, and orientation were found, respectively, in the middle region septa (57.49%), completed septa (75.95%), and transverse septa (93.37%). The effect of dental status, age, and gender on the presence of septa was not statistically significant (p > 0.05). Conclusion These high rates of findings support the importance of CBCT in the diagnosis of the variations of the maxillary sinus septa. Therefore, it is important to evaluate CBCT images of the relevant region to increase the success of surgical interventions in the maxillary posterior region and to eliminate possible complications. © 2019 Dental Investigation Society

Facial subcutaneous calcinosis and mandibular resorption in systemic sclerosis: a case report

WOS: 000247431700009PubMed ID: 17463103Systemic sclerosis (SSc) is an autoimmune disease characterized by widespread fibrosis of subcutaneous connective tissue, causing serious complications with the involvement of other systems. Tight, firm skin is the main characteristic of SSc, causing extrinsic pressure and the obliteration of the vessels. This then leads to ischaemia and destruction of the underlying bone. This mechanism may also lead to bone resorption of the mandibular body as it affects other bones of the skeleton. To date, only two cases of reported calcinosis in the facial area have been observed. In this report, a rare case of SSc with both subcutaneous calcinosis and mandibular bone resorption is presented. The role of dental practitioners in the diagnosis of the disease with respect to the orofacial symptoms is also discussed