Faculty of Dentistry of Monastir, Research Laboratory in Oral Health and Oral-Facial Rehabilitation, Monastir, Tunisia.
Periodontology Department of Monastir, Tunisia.
J Esthet Restor Dent. 2022 Jun;34(4):680-688. doi: 10.1111/jerd.12862. Epub 2021 Dec 31.
To carry out a detailed analysis of four indices proposed for the esthetic evaluation of implant-supported single crowns in the anterior maxillary sector.
Four esthetic indices were selected: the Pink and white esthetic score, the Copenhagen Index Score, the peri-implant and crown index (PICI), and the implant restoration esthetic index (IREI). The examiners were 15 expert subjects and 30 nonexpert ones. The intraclass correlation coefficient was used to assess reproducibility. The validity and the correlation of the esthetic indices results with the perception of nonexpert subjects were evaluated using the Pearson's correlation.
For inter- and intra-observer reproducibility, all the esthetic indices had an intraclass correlation coefficient value>0.8. As for validity, the highest correlation values were found for the PICI and for the IREI. The values of correlation with the perception of nonexpert subjects did not exceed 0.3 for all esthetic indices.
All esthetic indices evaluated presented good intra- and inter-rater reproducibility. Validity was considered satisfactory only for the PICI and the IREI. The correlation with the perception of nonexpert subjects showed a weak correlation with all the indices considered.
An approved esthetic indice with proven reproducibility and validity could provide a better objective overview of one's own esthetic results in the daily practice. It could also help to record the results over time to analyze the stability of the treatment procedure. The esthetic results of the different surgical and prosthetic protocols can also be compared, which facilitates the analysis of the indications relevance and clinical effects. However, low reproducibility according to the specialty and the practitioner's level of expertise was observed. A heterogeneity of results was also noted when compared with those of nonexpert subjects.
对用于评价上颌前牙区种植体支持单冠美学效果的四项指数进行详细分析。
选择了四项美学指数：粉色美学指数、白色美学指数、种植体周围及冠部指数（PICI）和种植体修复美学指数（IREI）。检查者包括 15 名专家和 30 名非专家。采用组内相关系数评估重复性。Pearson 相关性分析评估美学指数结果与非专家主观感知的有效性和相关性。
在观察者内和观察者间的可重复性方面，所有美学指数的组内相关系数值均>0.8。在有效性方面，PICI 和 IREI 的相关性最高。所有美学指数与非专家主观感知的相关性均未超过 0.3。
评估的所有美学指数均具有良好的观察者内和观察者间可重复性。仅 PICI 和 IREI 被认为具有良好的有效性。与非专家主观感知的相关性表明，所有考虑的指数与感知之间的相关性均较弱。
经证实具有可重复性和有效性的认可美学指数可以更好地客观评价日常实践中的美学效果。它还可以帮助记录随时间推移的结果，以分析治疗程序的稳定性。还可以比较不同手术和修复方案的美学效果，从而有助于分析适应证的相关性和临床效果。然而，根据专业和从业者的专业水平，观察到可重复性较低。与非专家主观感知的结果相比，还存在结果的异质性。
