Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Division of Fixed Prosthodontics and Biomaterials, University Clinic of Dental Medicine, University of Geneva, Geneva, Switzerland.
Clin Oral Implants Res. 2019 Aug;30(8):735-744. doi: 10.1111/clr.13457. Epub 2019 Jun 19.
To assess clinical, technical, and esthetic outcomes of veneered zirconia reconstructions cemented on non-original titanium bases over 1 year.
Twenty-four healthy patients presented with one missing tooth in the anterior maxilla or mandible and received a two-piece dental implant. The implants were restored with a screw-retained crown using a directly veneered zirconia reconstruction, which was extraorally cemented on a titanium base. After crown insertion, patients were scheduled for a baseline examination and re-examined at 6 months and at 1 year of loading. Measurements included biological, technical, and esthetic parameters. Data were analyzed with nonparametric tests.
Mean marginal bone levels measured 0.54 ± 0.39 mm (median: 0.47, range: 0.07-1.75 mm) at baseline and 0.54 ± 0.45 mm (median: 0.44, range: 0.06-1.52 mm) at 1 year. Mean probing depth (PD) (3.0 ± 0.6 mm at baseline to 3.5 ± 0.7 mm at 1 year [p = 0.002]), bleeding on probing (BOP) (27.1% ± 20.7% at baseline to 43.9% ± 28.0% at 1 year [p = 0.041]), plaque index (PI) (11.1% ± 21.2% at baseline to 18.2% ± 21.8% at 1 year [p = 0.381]) increased, whereas the width of the keratinized mucosa decreased from baseline to 1 year (3.1 ± 1.3 mm at baseline to 3.0 ± 1.2 mm at 1 year [p = 0.398]). Four implants (16.7%) were diagnosed with peri-implantitis (BOP positive, bone loss >1 mm) during the 1-year observation period. One implant was lost at 3 ½ months, resulting in a 95.8% survival rate. Four technical complications occurred and led to 83.3% complication-free reconstructions.
A significant increase in PD and BOP values was observed using directly veneered zirconia reconstructions cemented on non-original titanium bases.
评估经过 1 年时间，在非原生钛基底上黏接饰面氧化锆修复体的临床、技术和美学效果。
24 名健康患者的上颌或下颌各缺失 1 颗天然牙，均接受了 2 件式牙种植体治疗。种植体采用螺丝固位的皇冠修复，通过体外黏接在钛基底上的直接饰面氧化锆重建体进行修复。牙冠植入后，患者接受基线检查，并在 6 个月和 1 年的加载时进行重新检查。测量包括生物学、技术和美学参数。采用非参数检验进行数据分析。
平均边缘骨水平在基线时为 0.54±0.39mm（中位数：0.47，范围：0.07-1.75mm），1 年后为 0.54±0.45mm（中位数：0.44，范围：0.06-1.52mm）。平均探诊深度（PD）（基线时为 3.0±0.6mm，1 年后为 3.5±0.7mm [p=0.002]）、探诊出血（BOP）（基线时为 27.1%±20.7%，1 年后为 43.9%±28.0% [p=0.041]）和菌斑指数（PI）（基线时为 11.1%±21.2%，1 年后为 18.2%±21.8% [p=0.381]）均升高，而角化黏膜宽度从基线到 1 年时减少（基线时为 3.1±1.3mm，1 年后为 3.0±1.2mm [p=0.398]）。在 1 年的观察期内，有 4 个种植体（16.7%）被诊断为种植体周围炎（BOP 阳性，骨损失>1mm）。有 1 个种植体在 3 个半月时脱落，存活率为 95.8%。发生了 4 起技术并发症，导致 83.3%的重建体无并发症。
在非原生钛基底上黏接直接饰面氧化锆修复体后，PD 和 BOP 值显著增加。
