Radiographic assessment of peri-implant bone level: A comparative study of digital intraoral and digital panoramic radiography

Introduction The objective of this study was to compare two radiographic methods - digital intraoral and digital panoramic radiography in assessing marginal bone level around dental implants. The study also evaluated inter-observer and intra-observer reliability during repeated assessments. Material and Methods Marginal bone around 29 implants in 17 patients was assessed using standardized digital intraoral and digital panoramic radiographs. Two observers evaluated bone level by noting the thread at which marginal bone seemed to be attached at distal and mesial surfaces of the implants. The assessments were repeated after one week. Kappa statistics was used to evaluate agreement between assessments, observers, and radiographical methods. Results The agreement rate between digital intraoral and digital panoramic radiography was fair. Intra-observer agreement was very good, while inter-observer agreement was moderate. Conclusion Digital panoramic radiographs can be used to evaluate marginal bone level in patients with multiple implants and also to supplement intraoral radiographs. However, observer variability should be considered when comparing values from follow up studies for implant maintenance

Extensive Type III unicystic ameloblastoma: A case report with conservative management

Unicystic ameloblastoma is a distinct type of ameloblastoma that clinically and radiographically resembles a dentigerous cyst; however, on three-dimensional evaluation, it shows tumorous behavior and histopathologically shows ameloblastic epithelium. Compared to conventional ameloblastoma, it has a low recurrence rate after conservative treatment. We report a case of extensive unicystic ameloblastoma of mandible in a young male patient that showed tumorous characteristics on computed tomography (CT) and was treated conservatively by decompression. CT follow-up after 3 months showed significant bone formation. The lesion was then enucleated. Follow up at 8 months showed tremendous bone healing

Is focal melanotic lesion potentially malignant? A case report

الملخص: الميلانوما هي آفة خبيثة تصيب الخلايا المنتجة للميلانين التي تُرى غالباً في الجلد. وهي تنبع من السلائف المصطبغة عند ٣٥-٥٠٪ من الحالات. مع أن التصبغ الميلانيني في الفم كثير الحدوث، ولكن سرطان الخلايا المنتجة للميلانين كالميلانوما نادر الحدوث. وقد تنشأ الميلانوما من تصبغ موجود مسبقا، ولكن لم يسبق التعرف على آفات سالفة محددة. والمواقع الشائعة للميلانوما في الفم هي لثة الفك العلوي والحنك. نسجل هنا حالة ميلانوما تحولت من نسيج صبغي مزمن في لثة الفك السفلي والغشاء المخاطي الدهليزي مما يشير إلى الطبيعة الخبيثة المحتملة للبقع الصبغية في الفم. Abstract: Malignant melanoma is a lesion of melanocytes that is commonly observed on cutaneous surfaces. In 35–50% of cases, it originates from a pigmented precursor. Although oral melanocytic pigmentation is very common, melanocytic malignancies such as melanoma, are rare. Oral melanoma may arise from pre-existing pigmentation, but definitive precursor lesions have not been identified. Common sites for oral melanoma are the maxillary gingiva and palate. We report a case of malignant melanoma that transformed from a long-standing, focal, pigmented lesion on the mandibular gingiva and vestibular mucosa, suggesting the potentially malignant nature of focal oral melanotic lesions. الكلمات المفتاحية: استفحال إنتاج الميلانين في منطقة محددة, البقع الميلانينية, سرطان الخلايا المنتجة للميلانين في الفم, اللثة, الغشاء المخاطي الدهليزي, Keywords: Focal melanosis, Focal pigmented lesion, Malignant melanoma, Melanoplakia, Oral malignant melanoma, Potentially malignant lesio