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WOS: 000534060600010 PubMed: 31877300 Purpose: The purpose of the present study was to evaluate the effects of the orthodontic elastic forces used in fixed orthodontic treatment on the temporomandibular joint (TMJ) with normal and anteriorly displaced discs. Materials and Methods: Four different computer models for Class II and III malocclusion with the TMJ disc in the normal and anterior position were created. All the models were subjected to a constant force of 200g (125 N) on both sides to simulate the elastic pull force placed between the upper and lower jaw with 2 different configurations. Stresses on the TMJ were evaluated using finite element analysis. Results: The stresses in both the condyle and the disc were greater in the Class II models than in the Class III models. Similar results were found between the groups according to the direction of the orthodontic elastics. In the Class II models, the peak value of the maximum principal stresses was located in the posterior region of the condyle in the models with disc in the normal position. Conclusions: The elastic forces used during fixed orthodontic treatment increases the stress on the TMJ, especially for Class II patients. If the disc is in an anterior position, the stresses could be more harmful to the retrodiscal tissue. Thus, during orthodontic treatment, the TMJ should be carefully assessed to avoid irreversible damage. (C) 2019 American Association of Oral and Maxillofacial Surgeons Ondokuz Mayis University Scientific Research FundOndokuz Mayis University [PYO.DIS.1904.17.010] The present study was supported by the Ondokuz Mayis University Scientific Research Fund (project no. PYO.DIS.1904.17.010).

WOS: 000475395800002 PubMed: 31044441 Background Temporomandibular disorder (TMD) is a group of disease which affects the temporomandibular joint (TMJ) and supporting tissues of the musculoskeletal structures. Arthrocentesis is an effective treatment modality for TMD, especially in patients who suffer from pain and limited mouth opening. Objective The aim of this study was to investigate the effects of pre-operative and intra-operative variables on the clinical outcome of arthrocentesis therapy. Methods The records of 83 patients diagnosed as disc displacement (DD) without reduction according to DC/TMD, and treated with arthrocentesis were selected. Sex, age, bruxism history, pain intensity and maximum mouth opening (MMO) were recorded as pre-operative variables. Extravasation and the amount of irrigation were recorded as intra-operative variables. The success of the arthrocentesis procedure was determined as MMO

Torul, Damla/0000-0003-2323-606X WOS: 000457681400005 PubMed: 29763338 Accidental displacement of dental implants into the anatomical spaces is a rare complication that may be accompanied by tissue damage, functional disturbance, psychological distress, and medicolegal conditions. The aim of this report is to present an unusual case of a dental implant that displaced into the mandibular canal and to highlight the importance of adequate preoperative planning and surgical knowledge.

Tissue necrosis associated with local anesthesia and actinomycosis is rare. Here, the authors present management of excessive palatal necrosis associated with local anesthesia and actinomycotic infection. In oral surgery a simple procedure can lead to severe complications. Thus, preformation of any surgical procedure with a rigorous manner preferably by a qualified clinician may prevent the occurrence of this type of complications.

The present study aimed to analysis our small series consisting of the cases diagnosed as a pleomorphic adenoma of parotid gland. Records of 24 cases with postoperative diagnosis of parotid gland pleomorphic adenoma which operated by us between 2011-2015 were investigated retrospectively. The cases were evaluated in terms of demographic features, clinical and radiological findings, preoperative fine needle aspiration and postoperative histopathological examination Results, applied surgical method, complications and recurrens. The mean age of the cases was 44,66±15,47 and female/male ratio was 1,66. The tumor has superficial localisation in 21 (%87,5) and deep in 3 (%12,5) cases. Common clinical finding was painful mass (%54,17) and average symptomatic duration of disease was 66,91±70,07 months. Most used radiological method in diagnostic process was ultrasonography (%70,83). Results of fine needle aspiration were "benign cytology" for all cases and specific diagnosis was detected for 20 cases (%83,33). Depending on the tumor location superficial or total parotidectomy were preferred for treatment. The mean duration of operation was 139,79±34,15 minutes. Facial nerve dysfunction was common surgical complication (%50). The mean follow-up time of the cases was 27,33±11,98 and recurrence was not observed in any patient during this period. Ultrasonography and fine needle aspiration are easily implemented and cost-effective methods which must used in the first step of the diagnostic process of pleomorphic adenomas. No any recurrence was not seen in our patients during average 27-month follow-up after total or superficial parotidectomy, however rate of surgical complications, especially facial nerve dysfunction rate were high. © Gülhane Tip Fakültesi 2016.