Papadimitriou Dimitrios E V, Salari Samira, Gannam Camille, Gallucci German O, Friedland Bernard
Int J Prosthodont. 2014 Jul-Aug;27(4):320-7. doi: 10.11607/ijp.3791.
This study aimed to develop a classification of edentulous jaws for use as a diagnostic tool during implant-prosthodontic treatment planning.
The morphology of 200 fully edentulous alveolar ridges (100 maxillae, 100 mandibles) was assessed with cone beam computed tomography. Generic implants (length: 8 mm; diameter: 4.1 mm) were used. To develop the classification system, the feasibility of virtually placing the implants without vertical ridge augmentation was considered. Potential implant sites were evaluated in terms of ridge width and described as either type A (no horizontal augmentation required) or type B (horizontal augmentation required). A descriptive statistical analysis of subjects' age, sex, and arch classification was performed.
In total, 880 implants were virtually planned. Based on alveolar ridge height, four arch patterns were identified (C1 to C4), providing a basis for prosthodontic planning with either removable or fixed implant-supported restorations. The frequencies of each category were as follows: C3 (n = 62, 62%), C4 (n = 16, 16%), C2 (n = 12, 12%), and C1 (n = 10, 10%) for the maxilla and C3 (n = 36, 36%), C4 (n = 31, 31%), C1 (n = 24, 24%), and C2 (n = 9, 9%) for the mandible.
The proposed classification of the edentulous arch represents a useful tool for communication between clinicians when planning implant-supported rehabilitations.
本研究旨在开发一种无牙颌分类方法，用作种植修复治疗计划制定过程中的诊断工具。
采用锥形束计算机断层扫描评估200个全口无牙牙槽嵴（100个上颌骨，100个下颌骨）的形态。使用通用种植体（长度：8mm；直径：4.1mm）。为开发分类系统，考虑了在不进行垂直牙槽嵴增高的情况下虚拟植入种植体的可行性。根据牙槽嵴宽度评估潜在的种植位点，并描述为A类（无需水平增高）或B类（需要水平增高）。对受试者的年龄、性别和牙弓分类进行描述性统计分析。
共虚拟规划了880颗种植体。根据牙槽嵴高度，确定了四种牙弓模式（C1至C4），为采用可摘或固定种植支持修复体的修复计划提供了依据。上颌各类型的频率如下：C3（n = 62，62%）、C4（n = 16，16%）、C2（n = 12，12%）和C1（n = 10，10%）；下颌各类型的频率如下：C3（n = 36，36%）、C4（n = 31，31%）、C1（n = 24，24%）和C2（n = 9，9%）。
所提出的无牙颌分类方法是临床医生在规划种植支持修复时进行沟通的有用工具。
