Clinic of Reconstructive Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland; Univ. Bordeaux, INSERM, BioTis, U1026 Bordeaux, France; Unité de Parodontologie, Service de Médecine Bucco-Dentaire, CHU de Bordeaux, Bordeaux, France.
Clinic of Reconstructive Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland.
J Dent. 2024 Oct;149:105306. doi: 10.1016/j.jdent.2024.105306. Epub 2024 Aug 16.
To assess radiographic, clinical and patient-reported outcomes of single zirconia implant-supported crowns on titanium base abutments (TBA) over a 7.5-year period.
Twenty-four patients received bone-level titanium implants and screw-retained zirconia implant crowns utilising TBA. Marginal bone level (MBL), clinical parameters (probing depth-PD, bleeding on probing-BoP, plaque control record-PCR), technical complications (USPHS criteria) and patient satisfaction were assessed at crown delivery (baseline), 1 year (FU-1) and at 7.5 years (FU-7.5) of follow-up.
Eighteen patients were available for re-examination at 7.5 years. The mean MBL at FU-7.5 (0.35 ± 0.20mm) did not significantly change compared to baseline (0.54 ± 0.39, p=.352) and to FU-1 (0.54 ± 0.45mm, p=0.524). From baseline to 7.5 years, the mean PD increased significantly, from 3.0 ± 0.6mm to 3.7 ± 0.8mm (p=0.005). However, BoP and PCR did not significantly change; (BOP: from 27.1 ± 20.7% to 25.0 ± 20.0%, p=0.498; PCR: from 11.1 ± 21.2% to 25.0 ± 25.1%, p=0.100). Nine patients presented with more than one bleeding site. This denoted a peri-implant mucositis prevalence of 50%, whilst none of the implants presented peri-implantitis. One incidence of minor and major ceramic chipping were reported on 2 out of the 18 crowns, resulting in a prosthetic survival rate of 94.4%. Seventeen patients were highly satisfied with their result.
Single implant-supported zirconia crowns on TBA displayed: (i) minor number of technical complications, (ii) high prosthetic survival rate, (iii) stable marginal bone level and (iv) high patient satisfaction at 7.5 years.
Titanium base abutments despite their high use in clinical practice, lacked medium- and long-term studies. The presented findings highlight their clinical performance at 7.5 years as they display satisfying radiographic, clinical and patient-related outcomes. TBA appear to be a suitable abutment choice for medium-term implant-supported restorations.
评估单氧化锆种植体支持的冠在钛基台（TBA）上的影像学、临床和患者报告的结果，随访时间为 7.5 年。
24 名患者接受了骨水平钛种植体和螺丝固位氧化锆种植体冠的治疗，使用 TBA。在牙冠交付时（基线）、1 年（FU-1）和 7.5 年（FU-7.5）随访时，评估边缘骨水平（MBL）、临床参数（探诊深度-PD、探诊出血-BoP、菌斑控制记录-PCR）、技术并发症（USPHS 标准）和患者满意度。
18 名患者在 7.5 年时可进行复查。FU-7.5 时的平均 MBL（0.35 ± 0.20mm）与基线（0.54 ± 0.39，p=.352）和 FU-1（0.54 ± 0.45mm，p=0.524）相比无显著变化。从基线到 7.5 年，平均 PD 显著增加，从 3.0 ± 0.6mm 增加到 3.7 ± 0.8mm（p=0.005）。然而，BoP 和 PCR 无显著变化；（BOP：从 27.1 ± 20.7%到 25.0 ± 20.0%，p=0.498；PCR：从 11.1 ± 21.2%到 25.0 ± 25.1%，p=0.100）。9 名患者出现了多个出血部位。这表示有 50%的种植体周围黏膜炎患病率，而没有任何种植体出现种植体周围炎。18 个牙冠中有 2 个报告了轻微和严重的陶瓷崩瓷，修复体存活率为 94.4%。17 名患者对治疗结果非常满意。
TBA 上的单氧化锆种植体支持的牙冠表现出：（i）较少的技术并发症，（ii）较高的修复体存活率，（iii）稳定的边缘骨水平和（iv）7.5 年时较高的患者满意度。
尽管钛基台在临床实践中广泛应用，但缺乏中长期研究。本研究结果强调了它们在 7.5 年时的临床表现，因为它们显示出令人满意的影像学、临床和患者相关结果。TBA 似乎是一种适合中期种植体支持修复的基台选择。
