de Freitas A R, de Andrada M A, Baratieri L N, Monteiro Júnior S, de Sousa C N
Federal University of Santa Catarina, School of Dentistry, Florianopolis, Brazil.
Quintessence Int. 1994 Jun;25(6):419-24.
Twenty children, presenting 66 proximal carious lesions in 60 primary molars, were selected to receive composite resin tunnel restorations. Thirty of these teeth were expected to exfoliate within 6 months (group I); in the remaining 30 teeth exfoliation was expected within 1 year (group II). All teeth received tunnel preparations, which were then restored with a posterior composite resin. The restorations were evaluated after 6 months and after 1 year through each of the following methods: bitewing radiographic examination, clinical examination with a probe and mirror, and direct examination of proximal surfaces after tooth extraction. The occlusal portions of the restorations were considered to be excellent both after 6 months and 1 year. Radiographic examinations and direct examinations (performed after extraction of teeth) did not reveal the same percentages of secondary caries in the proximal portion of restorations. Fracture of the marginal crest reached 3% during the first 6 months, but fracture was absent during the subsequent 6 months.
选取20名儿童，其60颗乳磨牙上有66处近端龋损，接受复合树脂隧道修复术。其中30颗牙齿预计在6个月内脱落（第一组）；其余30颗牙齿预计在1年内脱落（第二组）。所有牙齿均进行隧道预备，然后用后牙复合树脂修复。在6个月和1年后，通过以下每种方法对修复体进行评估：咬合翼片X线检查、用探针和口镜进行临床检查以及牙齿拔除后对近端表面进行直接检查。修复体的咬合部分在6个月和1年后均被认为是优秀的。X线检查和直接检查（在拔牙后进行）显示修复体近端继发龋的百分比不同。边缘嵴骨折在前6个月达到3%，但在随后的6个月中未出现骨折。
