Calamia J R
Am J Dent. 1989 Feb;2(1):9-15.
This study evaluated 115 etched porcelain laminate veneers placed by a single operator at New York University Dental Center between 1982 and 1985. The restorations were divided into two groups. Group I consisted of 43 restorations placed without any tooth preparation; Group II consisted of 72 restorations placed using a chamfer preparation. The U.S.P.H.S. criteria was used to record cavosurface marginal discoloration, marginal integrity, and presence of caries. A clinical examination also revealed the number of debonds and/or the number of fractures of porcelain. A periodontal evaluation included the use of baseline and recall stone replicas of restored teeth to measure the height of the free gingival margin taken mid-facial to the incisal edge of the restoration. Any changes in gingival contour were also noted. Plaque and gingival indices were also recorded. The low fracture and debond rate found in the study combined with no incidence of caries seem to indicate that these restorations are functioning satisfactorily and with minimal negative periodontal response.
本研究评估了1982年至1985年间由纽约大学牙科中心的一名操作人员放置的115颗酸蚀瓷贴面。修复体分为两组。第一组包括43颗未进行任何牙齿预备而放置的修复体；第二组包括72颗采用倒角预备放置的修复体。使用美国公共卫生署（U.S.P.H.S.）标准记录洞缘边缘变色、边缘完整性和龋齿情况。临床检查还显示了瓷贴面脱粘的数量和/或瓷体骨折的数量。牙周评估包括使用修复牙齿的基线和复诊时的石膏模型来测量修复体切缘面部中点处游离龈边缘的高度。还记录了牙龈外形的任何变化。同时记录菌斑指数和牙龈指数。该研究中发现的低骨折和脱粘率以及无龋齿发生率似乎表明这些修复体功能良好，对牙周的负面影响最小。
