定制氧化锆和钛种植体基台用于犬齿和后牙单颗牙种植修复的随机对照临床试验：1年功能的初步结果

Randomized controlled clinical trial of customized zirconia and titanium implant abutments for canine and posterior single-tooth implant reconstructions: preliminary results at 1 year of function.

作者信息

Sailer Irena, Zembic Anja, Jung Ronald Ernst, Siegenthaler David, Holderegger Claudia, Hämmerle Christoph Hans Franz

机构信息

Department of Fixed and Removable Prosthodontics and Dental Material Science, School of Dental Medicine, University of Zurich, Plattenstrasse 118032 ZurichSwitzerland.

出版信息

Clin Oral Implants Res. 2009 Mar;20(3):219-25. doi: 10.1111/j.1600-0501.2008.01636.x.

DOI:10.1111/j.1600-0501.2008.01636.x

PMID:19397632

Abstract

OBJECTIVES

The aim of this study was to test whether or not customized zirconia abutments exhibit the same survival rates in canine and posterior regions as titanium abutments, and to compare the esthetic result of the two abutment types.

MATERIAL AND METHODS

Twenty-two patients with 40 implants in posterior regions were included and the implant sites were randomly assigned to 20 customized zirconia and 20 customized titanium abutments. All-ceramic (AC) and metal-ceramic (MC) crowns were fabricated. In all except two cases, the crowns were cemented on the abutments using resin or glass-ionomer cements. Two zirconia reconstructions were screw retained. At baseline, 6 and 12 months, the reconstructions were examined for technical and biological problems. Probing pocket depth (PPD), plaque (Pl) and bleeding on probing (BOP) were assessed and compared with natural control teeth. Furthermore, the difference of color (DeltaE) of the peri-implant mucosa and the gingiva of control teeth was evaluated by means of a spectrophotometer (Spectroshade). The data were analyzed with Student's unpaired t-test, ANOVA and regression analyses.

RESULTS

Twenty patients with 19 zirconia and 12 titanium abutments were examined at a mean follow-up of 12.6+/-2.7 months. The survival rate for reconstructions and abutments was 100%. No technical or biological problems were found at the test and control sites. Two chippings (16.7%) occurred at crowns supported by titanium abutments. No difference was found regarding PPD (meanPPD(ZrO2) 3.4+/-0.7 mm, mPPD(Ti) 3.3+/-0.6 mm), Pl (mPl(ZrO2) 0.2+/-0.3, mPl(Ti) 0.1+/-1.8) and BOP (mBOP(ZrO2) 60+/-30%, mBOP(Ti) 30+/-40%) between the two groups. Both crowns on zirconia and titanium abutments induced a similar amount of discoloration of the soft tissue compared with the gingiva at natural teeth (DeltaE(ZrO2) 8.1+/-3.9, DeltaE(Ti) 7.8+/-4.3).

CONCLUSIONS

At 1 year, zirconia abutments exhibited the same survival and a similar esthetic outcome as titanium abutments.

摘要

目的

本研究旨在测试定制氧化锆基台在犬牙和后牙区域的生存率是否与钛基台相同，并比较两种基台类型的美学效果。

材料与方法

纳入22例后牙区植入40颗种植体的患者，将种植位点随机分配至20个定制氧化锆基台和20个定制钛基台。制作全瓷（AC）和金属烤瓷（MC）冠。除2例情况外，所有冠均使用树脂或玻璃离子水门汀粘结在基台上。2个氧化锆修复体采用螺丝固位。在基线、6个月和12个月时，检查修复体是否存在技术和生物学问题。评估探诊深度（PPD）、菌斑（Pl）和探诊出血（BOP），并与天然对照牙进行比较。此外，使用分光光度计（Spectroshade）评估种植体周围黏膜与对照牙牙龈的颜色差异（DeltaE）。数据采用Student非配对t检验、方差分析和回归分析。

结果

对20例患者的19个氧化锆基台和12个钛基台进行了平均随访12.6±2.7个月的检查。修复体和基台的生存率为100%。在测试部位和对照部位均未发现技术或生物学问题。在钛基台支持的冠上发生了2处崩瓷（16.7%）。两组之间在PPD（平均PPD（ZrO2）3.4±0.7mm，平均PPD（Ti）3.3±0.6mm）、Pl（平均Pl（ZrO2）0.2±0.3，平均Pl（Ti）0.1±1.8）和BOP（平均BOP（ZrO2）60±30%，平均BOP（Ti）30±40%）方面未发现差异。与天然牙牙龈相比，氧化锆基台和钛基台上的冠引起的软组织变色量相似（DeltaE（ZrO2）8.1±3.9，DeltaE（Ti）7.8±4.3）。