Estafan Ashraf, Furnari Peter C, Goldstein Gary, Hittelman Eugene L
Advanced Education Program in Prosthodontics, New York University College of Dentistry, New York, NY 11050, USA.
J Prosthet Dent. 2005 Mar;93(3):221-6. doi: 10.1016/j.prosdent.2004.12.012.
The etiology of noncarious cervical lesions is not well understood. An understanding of the etiology helps the clinician determine appropriate treatment and management strategies. Purpose This study evaluated the relationship between noncarious cervical lesions and occlusal (or incisal) wear.
Casts (n = 299) made from dental students were articulated in a semi-adjustable articulator and evaluated. Data included the presence and contour of noncarious cervical lesions (NCLs) and the presence, location, and severity of any occlusal/incisal wear facets. Also included were Angle's classification, occlusal guidance patterns, midline, presence of tori, tooth restoration, reverse articulation (crossbite), open occlusal relationship, and posterior excursive contacts where present. Following a calibration procedure, 2 evaluators made independent observations on the casts. The first evaluator recorded for each tooth in each subject: presence and severity of NCLs, presence and extent of occlusal/proximal restorations, and presence of reverse articulation and open occlusal relationship. Following the first evaluation red rope wax was placed at the cervical margins of each tooth for the purpose of blinding the second evaluator from NCL observations. The second evaluator recorded severity and location of occlusal/incisal wear, presence or absence of posterior excursive contacts, Angle's classification, occlusal guidance pattern, any midline discrepancy, and presence or absence of tori. The Spearman correlation coefficient and chi 2 tests were used to analyze the data (alpha=.05).
There was no relationship between noncarious cervical lesions and occlusal/incisal wear. There was also no correlation between NCLs and other parameters examined.
Under the conditions of this study, noncarious cervical lesions are not related to occlusal wear.
非龋性颈部病变的病因尚未完全明确。了解病因有助于临床医生确定合适的治疗和管理策略。目的：本研究评估非龋性颈部病变与咬合（或切缘）磨损之间的关系。
对牙科学生制作的模型（n = 299）在半可调式咬合架上进行咬合分析和评估。数据包括非龋性颈部病变（NCLs）的存在情况和外形，以及任何咬合/切缘磨损小平面的存在情况、位置和严重程度。还包括安氏分类、咬合引导模式、中线、隆突的存在情况、牙齿修复情况、反咬合（锁牙合）、开牙合关系以及存在时的后牙非正中咬合接触。经过校准程序后，两名评估人员对模型进行独立观察。第一位评估人员记录每个受试者每颗牙齿的情况：NCLs的存在情况和严重程度、咬合/邻面修复体的存在情况和范围、反咬合和开牙合关系的存在情况。在第一次评估后，在每颗牙齿的颈部边缘放置红色绳索蜡，以使第二位评估人员无法观察到NCLs。第二位评估人员记录咬合/切缘磨损的严重程度和位置、后牙非正中咬合接触的存在与否、安氏分类、咬合引导模式、任何中线差异以及隆突的存在与否。使用Spearman相关系数和卡方检验分析数据（α = 0.05）。
非龋性颈部病变与咬合/切缘磨损之间无相关性。NCLs与其他检查参数之间也无相关性。
在本研究条件下，非龋性颈部病变与咬合磨损无关。
