Journal of Dental Medicine

Background and Aims: Dry socket is one of the most common post-tooth-extraction complications. The aim of this study was to investigate the relationship between some of the predisposing factors of dry socket and this complication in all maxillary and mandibular molars and evaluation of its incidence. Furthermore, the two jaws were compared.
Materials and Methods: In this descriptive-analytical cross-sectional study, 150 patients were examined in 2020 in the city of Zahedan. A questionnaire consisting of two sections was designed: In the first section age, gender, systemic disease, smoking status, contraceptive pill consumption, and antibiotic consumption were investigated. In the second section, data related to the difficulty of surgery based on the duration of surgery and the number of local anesthetic cartridges that were administered were collected. Then, the collected data were analyzed by Chi-square and Kruskal-Wallis tests.
Results: The incidence of dry socket was 25.3%. The frequency of dry socket was significantly relevant to smoking, oral contraceptive consumption, difficulty of the surgery, and the number of local anesthetic cartridges that were administered (P≤0.05). Age, gender, controlled systemic disorder, and systemic antibiotic usage for two weeks prior to surgery revealed no significant associations with dry socket (P>0.05). Furthermore, the frequency of dry socket in maxillary and mandibular jaws had a significant difference according to smoking status, difficulty of surgery, and number of local anesthetics carpules (P≤0.05).
Conclusion: It is recommended to identify high-risk groups when performing extraction to consider pre-operative and post-operative measures in order to reduce postoperative complications.

Background and Aims: Mandibular third molar is the most common impacted tooth and craniofacial morphology and facial parameters can be appropriate predictors of impaction of this tooth. The aim of this study was to evaluate the relationship between Gonial angle, mandibular plane inclination, and ramus height with the impaction of mandibular third molar.
Materials and Methods: This retrospective descriptive-analytical study was performed by analysis of lateral cephalometric radiographic images of 172 patients in city of Zahedan in 2020. The status of eruption of mandibular third molars was determined by clinical examination and assistance of panoramic radiographic images and samples were categorized into four groups: fully erupted (1), partially impacted (2), impacted (3), partially developed (4). Then, the Gonial angle, mandibular plane, and ramus height were measured on lateral cephalometric images of each group and collected data were analyzed by Chi-square test and analysis of variance (ANOVA).
Results: Among the patients, 68.02% were female and 31.97% were male. The difference between the mean values of Gonial angle of four groups was not statistically significant (P>0.05). In the fourth group, the mean value of mandibular plane inclination was significantly higher (29.74) and the mean value of the ramus height was significantly less (49.21 mm) than other groups.
Conclusion: According to the preformed analysis and obtained results, Gonial angle, mandibular plane, and ramus height were not accurate predictors for the impaction of mandibular third molar and further studies should be undertaken in this filed.