Smidt Ami, Lachish-Tandlich Moshik, Venezia Eyal
Department of Prosthodontics, The Hebrew University-Hadassah, School of Dental Medicine, Jerusalem, Israel.
Quintessence Int. 2005 Feb;36(2):89-95.
A predictable esthetic restoration is not limited to the restored teeth; it has to include the gingival unit and its interface with the teeth involved. Failure to deliver restorations that maintain gingival health jeopardizes the success of any restorative procedure and creates potential for periodontal problems. Perforations, fractures, root resorption, or caries in the cervical area of the tooth, especially in the anterior part of the mouth, present many challenges to the clinician. Failure to place the crown margins on sound tooth material may violate the biologic width and should be considered a restorative failure. Orthodontic root extrusion or forced eruption is a well-documented clinical method for altering the relation between a nonrestorable tooth and its attachment apparatus, elevating sound tooth material from within the alveolar socket. It has some advantages over surgical crown lengthening, which is less conservative considering the sacrifice of supporting bone and the negative change in the length of the clinical crowns of both the tooth and its neighbors. This article presents a case of a maxillary right lateral incisor, extensively broken down following trauma, treated with orthodontic extrusion combined with gingival fiberotomy, without a need for a corrective surgical procedure.
可预测的美学修复不仅限于修复牙齿;它必须包括牙龈组织及其与相关牙齿的界面。未能提供维持牙龈健康的修复体,会危及任何修复程序的成功,并引发牙周问题的可能性。牙齿颈部区域,尤其是口腔前部的穿孔、骨折、牙根吸收或龋齿,给临床医生带来了诸多挑战。未能将牙冠边缘置于健康的牙齿材料上可能会侵犯生物学宽度,应被视为修复失败。正畸牙根挤压或强制萌出是一种有充分文献记载的临床方法,用于改变无法修复的牙齿与其附着装置之间的关系,从牙槽窝内提升健康的牙齿材料。与手术冠延长术相比,它具有一些优势,手术冠延长术不太保守,因为会牺牲支持骨,并且牙齿及其邻牙的临床冠长度会发生负面变化。本文介绍了一例上颌右侧侧切牙在外伤后严重损坏的病例,采用正畸挤压结合牙龈纤维切断术进行治疗,无需进行矫正手术。