Objectives: The aim of this study was to investigate the psychometric properties of Rusbult's relationship investment scale based on the main components' analysis, through varimax rotation, and obtaining a precise instrument for Iranian samples. Methods: The statistical population of this study consisted of all 1416 married students of Qazvin Payame Noor University in the academic year of 1396 to 1397, from which 302 subjects were selected by convenience sampling. The statistical population consisted of 300 Payame Noor University students in Qazvin, who were selected by convenience sampling. Overall 176 of the cases were female and the rest were male. Results: The results obtained from the main components' analysis using varimax rotation based on four factors converged with the English version of relationship investment scale and only some subscales needed to be modified as follows: Satisfaction (including

Introduction: The purpose of our study was to evaluate patients and technique and complete a review of the literature related to Zigzag genioplasty. Materials and Methods: To address the research purpose, the investigators designed and implemented a prospective clinical trial study. Seven osteotomy types (I–VII) are proposed for genioplasty that will permit one to decrease the 3-dimensions of the chin. These osteotomy designs are based on the displacement of bone fragments on the slopes of an inclined plane with a superior-medial direction. Results: All of the patients were satisfied with the esthetic results of their osteotomy. Based on presurgical and post-surgical facial analysis and clinical evaluations, no patients who received a Zigzag osteotomy suffered from permanent neurosensory deficiency, infection, hardware failure, severe pain, asymmetry, necrosis, massive hematoma, relapse, or suprahyoid muscle dysfunction. Conclusions: As a result, on the basis of our experience with 23 patients and after at least 1 year of follow-up with each one, the authors concluded that this technique is simple and easy to implement.

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Synovial sarcoma is a soft tissue sarcoma that rarely occurs in the oral cavity and the most common site is the tongue. Synovial sarcoma of the oral cavity mostly presents as a slowly growing, painless, and deeply seated mass. Radical surgical excision with negative margins is the treatment of choice and adjuvant radiotherapy is advised. This report presents a 48-year-old male patient with a rapidly growing mandibular gingival mass with underlying alveolar bone destruction. Incisional biopsy was done, and the specimen was stained with Hematoxylin and Eosin. Microscopic sections showed fascicles of proliferated spindle-shaped cells with plump nuclei that invaded the surrounding skeletal muscles. The lesion was positive for Vimentin, CD99, CK and Bcl-2 in immunohistochemistry. The diagnosis of monophasic synovial sarcoma was made, and radical surgical excision was performed. Due to the paucity of synovial sarcoma in the oral region, the information about appropriate treatment for this sarcoma is limited. The knowledge about this rare entity and microscopic characteristics are important and help to have a proper diagnosis and improved treatment plan.

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