AlTarawneh Sandra, Hamdan Ahmad A S, Alhadidi Abeer, Hattar Susan, Al-Rabab'ah Mohammad, Baqain Zaid
Department of Prosthodontics, School of Dentistry, The University of Jordan, Amman, Jordan.
Department of Oral and Maxillofacial Surgery, Oral Medicine and Periodontology, School of Dentistry, The University of Jordan, Amman, Jordan.
Dent Res J (Isfahan). 2020 Mar 17;17(2):92-99. eCollection 2020 Mar-Apr.
Immediate dental implants placement and loading utilizing definitive abutments might save time and cost when an esthetic final result is anticipated. The objective of this prospective clinical trial was to evaluate the esthetic outcome of immediate implantation and immediate nonfunctional loading utilizing definitive abutments, with and without bony substitutes filling the peri-implant gap.
In this clinical trial study a total of 11 implants were placed utilizing a flapless immediate post extraction approach in the maxilla (second premolar to second premolar). Atraumatic extraction was performed and implants were immediately placed. The gap was either left without grafting or filled with particulate bone material. Immediate nonfunctional loading was performed utilizing a definitive abutment. The pink esthetic scores (PESs) were assessed preoperatively, at 1- and 2-year follow-up periods. Dental casts were obtained at respective time intervals; scanned, registered, and closest point distances were measured. For all statistical tests, value of = 0.05 was set as a statistical significance level.
The mean of PES at baseline was 9.4 ± 1.69, at 1 year was 9.5 ± 2.07, at 2 years was 10.2 ± 2.75, for the graft group 10.3 ± 2.8, and for nongrafting group was 10.2 ± 2.59. There were no statistically significant differences in PESs at baseline when compared to 1- and 2-year intervals, and for grafting group versus nongrafting group ( = 0.24). Distances between the two time points for all cases were <1 mm in all reference planes.
Immediate placement and nonfunctional loading utilizing a definitive abutment appear to result in a stable result as far as esthetic outcome and alveolar process sufficiency are concerned.
当预期获得美观的最终效果时，即刻种植并使用定制基台进行加载可能节省时间和成本。这项前瞻性临床试验的目的是评估使用定制基台进行即刻种植和即刻非功能性加载的美学效果，种植体周围间隙填充或不填充骨替代材料。
在这项临床试验研究中，采用无瓣即刻拔牙后方法在上颌（第二前磨牙至第二前磨牙）共植入11颗种植体。进行无创拔牙并即刻植入种植体。间隙要么不植骨，要么用颗粒状骨材料填充。使用定制基台进行即刻非功能性加载。术前、1年和2年随访期评估粉色美学评分（PES）。在各个时间间隔获取石膏模型；进行扫描、配准并测量最近点距离。对于所有统计检验，设定α = 0.05作为统计显著性水平。
移植组基线时PES平均值为9.4±1.69，1年时为9.5±2.07，2年时为10.2±2.75；未移植组基线时PES平均值为10.3±2.8，未移植组为10.2±2.59。与1年和2年间隔相比，以及移植组与未移植组之间，基线时PES无统计学显著差异（P = 0.24）。所有病例在所有参考平面上两个时间点之间的距离均<1 mm。
就美学效果和牙槽突充足性而言，使用定制基台进行即刻种植和非功能性加载似乎能产生稳定的结果。
