目的:比较单颗陶瓷冠修复牙的临床牙周参数,有和没有牙冠延长程序。
方法:这种前瞻性,纵向,控制,单盲临床试验涉及22例患者,共有41颗带有陶瓷冠的牙齿。牙齿分为两组:测试(n=21),包括牙冠延长手术后修复的牙齿,和控制(n=20),包括没有牙冠延长手术的修复牙齿。斑块指数(PI),牙龈指数(GI),探测深度(PD),探查出血(BoP),在各组(手术治疗和非手术治疗)之间和各组内对每种类型的部位(治疗-tt;相邻-ad;和不相邻-ad)进行临床依恋水平(CAL)比较。此外,牙龈表型(GP),牙龈衰退(GR),修复后还评估了角化组织宽度(KTW)。统计分析使用设定在5%的显著性水平。
结果:PI,GI,收支平衡表减少了,但在大多数随访期间,各组或组间均未观察到统计学显著差异.TT位点的CAL在测试组中始终较高,试验组PD也较高(p<0.05),除了T3。adPD,NadPD,adcal,nadCAL和nadCAL在组间和时期之间没有显着差异。GP与GR的发生之间存在显着关联,厚平表型与GR的相关性较小,无论是否进行牙冠延长术。
结论:修复牙齿的牙冠延长手术在12个月后对PI和GI没有显著影响。虽然牙冠延长手术影响TT部位的PD和CAL,它不影响相邻和非相邻站点。
结论:这些发现强调了在计划牙冠延长手术时考虑患者个体因素和对牙周组织的潜在影响的重要性。临床医生必须全面了解参与修复治疗的牙周组织的动力学,以优化程序,提高成功率,尽量减少潜在的并发症。
To compare the clinical periodontal parameters of teeth restored with a single ceramic crown, with and without crown lengthening procedure.
This prospective, longitudinal, controlled, and single-blinded clinical trial involved 22 patients with a total of forty-one teeth with ceramic crowns. The teeth were divided into two groups: test (n = 21), comprising teeth rehabilitated post crown-lengthening surgery, and control (n = 20), comprising teeth rehabilitated without crown-lengthening surgery. Plaque index (PI), gingival index (GI), probing depth (PD), bleeding on probing (BoP), and clinical attachment level (CAL) were compared between groups (surgically treated and non-surgically treated) and within each group for each type of site (treated -tt; adjacent - ad; and nonadjacent - nad). Additionally, gingival phenotype (GP), gingival recession (GR), and keratinized tissue width (KTW) were also assessed post- restoration. Statistical analyses used a significance level set at 5 %.
PI, GI, and BoP were reduced, but no statistically significant differences were observed within each group or between groups for most follow-up periods. CAL of the TT sites was consistently higher in the test group, and PD was also higher in the test group (p < 0.05), except at T3. adPD, nadPD, adCAL, and nadCAL demonstrated no significant differences between groups and periods. A significant association was identified between GP and the occurrence of GR, with the thick-flat phenotype demonstrating less association with GR, regardless of whether crown lengthening was performed or not.
Crown-lengthening surgery in rehabilitated teeth does not significantly affect PI and GI after 12 months. Although crown-lengthening surgery affected PD and CAL in TT sites, it did not affect adjacent and non-adjacent sites.
These findings emphasize the importance of considering individual patient factors and the potential impact on periodontal tissues when planning crown-lengthening surgery. Clinicians must have a comprehensive understanding of the dynamics of the periodontal tissues involved in restorative treatments to optimize the procedure, increase success rates, and minimize potential complications.