Response to Proximal Restorations Placed Either Subgingivally or Following Crown Lengthening in XXXX with No History of Periodontal Disease.

@entity1 @entity6730 @entity527 @entity548 @entity2521 @entity1062
The purpose of this study was to compare the impact of resin restorations placed supragingivally or impinging periodontal biologic width (PBW). Ten @entity1 (aged 19 to 35 years) with at least two contralateral teeth (premolars and molars) in need of proximal subgingival restorations participated. @entity1062 ( @entity1062 ) (impingement of PBW with transsurgical restorations) and control croup (CG) (supragingival restorations after crown lengthening) were randomly assigned. @entity527 ( @entity527 ), @entity548 on probing (BOP), @entity2521 ( @entity2521 ), and clinical @entity6730 (CAL) were evaluated at baseline and at 45, 90, and 180 days, and by transperiodontal probing at baseline and 180 days. Generalized estimating equations, Wald test, and t test were used (P  <= .05). @entity527 and BOP were reduced and maintained at low levels (less than 10% from day 45 on). @entity2521 initially reduced in the @entity1062 . At day 180, no intra- or intergroup differences were observed (P > .05). CAL was higher in the CG after surgery (P < .05) and remained stable for both groups throughout the study. In conclusion, proximal bonded restorations infringing on the PBW may not require clinical crown lengthening.
