由于下颌骨扩大的冠状突撞击the骨,因此冠状增生是逐渐张口受限的罕见原因之一。对所有病例报告和病例系列的冠状增生进行了审查。性别,治疗年龄,发病年龄,增生类型(单侧/双侧),相关历史,治疗,手术方法,术前张口,术中张口,记录和分析随访期间的张口情况。共纳入报告115例的82篇文章。据报道,冠状增生的平均年龄为22.64岁,男性占优势。大多数病例的诊断和治疗年龄在11-20岁之间。这种情况通常涉及下颌骨的双侧冠状突。术前张口的平均宽度为16.5mm,术中改善为36.3mm的平均张口。平均随访19个月,平均张口34.8mm。虽然冠状增生的病因尚不明确,冠状动脉切除术或冠状动脉切开术的治疗效果良好。
Coronoid hyperplasia is one of the rare causes of progressive limitation of mouth opening due to impingement of the enlarged coronoid process of the mandible on the zygomatic bone. A
review was performed on all cases reports and case series on coronoid hyperplasia. Gender, age at treatment, age of onset, types of hyperplasia (unilateral/bilateral), associated history, treatment, surgical approach, preoperative mouth opening, intraoperative mouth opening, mouth opening at follow up and follow up period were recorded and analyzed. A total of 82 articles which reported 115 cases were included. Coronoid hyperplasia was commonly reported at mean age of 22.64 years old with male preponderance. Most of the cases were diagnosed and treated between the age of 11-20 years old. This condition commonly involved bilateral coronoid process of mandible. The mean width of preoperative mouth opening was 16.5mm and was improved to a mean mouth opening of 36.3mm intraoperatively. Mean mouth opening was 34.8mm at an average follow up of 19 months. While the etiopathogenesis of coronoid hyperplasia is still not conclusive, treatment with either coronoidectomy or coronoidotomy produced good improvement in mouth opening.