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Esthetic Evaluation of Implant-Supported Single Crowns: The Implant Restoration Esthetic Index and Patient Perception.
Journal of Prosthodontics : Official Journal of the American College of Prosthodontists 2017 November 18
PURPOSE: To test the validity and reliability of a newly developed Implant Restoration Esthetic Index (IREI) and to compare esthetic outcomes reported by patients and professionals.
MATERIALS AND METHODS: Ten graduate students and 10 prosthodontists assessed esthetic outcomes of 27 single-tooth implants with the IREI. Six peri-implant soft tissue parameters were measured using visual analog scales: mesial papilla presence, distal papilla presence, gingival trigone, soft tissue curvature, alveolar process deficiency, and soft tissue color and texture, as well as the six crown parameters: crown contour, crown position, crown labial convexity, crown characterization, crown color and translucency, and abutment visibility. The validity was tested based on Pearson's correlation. The internal consistency reliability was analyzed by Cronbach's alpha. Interclass correlation coefficients (ICC) were calculated to express the test-retest reliability and the inter-rater reliability. The correlations between patient and professional evaluations were analyzed by Pearson's correlation.
RESULTS: The IREI demonstrated significant correlation (p < 0.05) to the pink esthetic score and white esthetic score (PES/WES). The internal consistency reliability showed a Cronbach's Alpha of 0.830. The test-retest reliability was excellent in both the graduate student group and the prosthodontist group, with ICCs of 0.961 and 0.952, respectively (p < 0.05). The inter-rater reliability was acceptable, with ICCs of 0.649 and 0.667, respectively (p < 0.05). Low correlation coefficients were found between patient and professional evaluations.
CONCLUSIONS: The results of this study indicated that the IREI was considered a valid and reliable index involving sufficient parameters for professional esthetic evaluation of single-tooth implant restorations. The patient-reported esthetic outcomes had poor or no significant correlation to professional-reported outcomes.
MATERIALS AND METHODS: Ten graduate students and 10 prosthodontists assessed esthetic outcomes of 27 single-tooth implants with the IREI. Six peri-implant soft tissue parameters were measured using visual analog scales: mesial papilla presence, distal papilla presence, gingival trigone, soft tissue curvature, alveolar process deficiency, and soft tissue color and texture, as well as the six crown parameters: crown contour, crown position, crown labial convexity, crown characterization, crown color and translucency, and abutment visibility. The validity was tested based on Pearson's correlation. The internal consistency reliability was analyzed by Cronbach's alpha. Interclass correlation coefficients (ICC) were calculated to express the test-retest reliability and the inter-rater reliability. The correlations between patient and professional evaluations were analyzed by Pearson's correlation.
RESULTS: The IREI demonstrated significant correlation (p < 0.05) to the pink esthetic score and white esthetic score (PES/WES). The internal consistency reliability showed a Cronbach's Alpha of 0.830. The test-retest reliability was excellent in both the graduate student group and the prosthodontist group, with ICCs of 0.961 and 0.952, respectively (p < 0.05). The inter-rater reliability was acceptable, with ICCs of 0.649 and 0.667, respectively (p < 0.05). Low correlation coefficients were found between patient and professional evaluations.
CONCLUSIONS: The results of this study indicated that the IREI was considered a valid and reliable index involving sufficient parameters for professional esthetic evaluation of single-tooth implant restorations. The patient-reported esthetic outcomes had poor or no significant correlation to professional-reported outcomes.
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