A within-subject clinical trial on the conversion of mandibular two-implant to three-implant overdenture: Patient-centered outcomes and willingness to pay

Elham Emami, Aminah Alesawy, Pierre de Grandmont, Daiane Cerutti-Kopplin, Naoki Kodama, Mélanie Menassa, Pierre Rompré, Robert Durand

Research output: Contribution to journalArticle

Abstract

Objectives: To examine the impact of adding a third midline implant with stud attachment to a mandibular two-implant overdenture on patient-oriented outcomes. Methods: In this pre–post design clinical trial, following the standard procedures, mandibular two-implant overdentures of 17 edentulous individuals (61.9 ± 6.6 years) were converted to three-implant overdentures by adding a stud attachment to an unloaded midline implant. Patient-oriented outcomes included patient expectations and satisfaction with implant overdenture as well as willingness to pay the cost of conversion. Data were collected at baseline and at the 6-week follow-up using visual analog and binary scales as well as open-ended questions. Statistical analysis included descriptive statistics, Spearman's correlation, Fisher exact test, Mann–Whitney U test, and the exact sign test. Results: After connecting the third midline implant to the mandibular two-implant overdenture, there was a statistically significant decrease in the anteroposterior movement (p = 0.005) as evaluated by clinicians. Moreover, study participants reported an increase in perceived stability of the overdenture (95% CI; 0.68–1.00, p = 0.002) and in their ability to speak (95% CI; 0.63–1.00, p = 0.008). The addition of a third implant met the expectations of 94% of patients in regard to lower denture stability, 100% for retention, and 82.4% for comfort. The mandibular three-implant overdenture increased patient general satisfaction over a short period of time, but this improvement was not statistically significant. About 80% of patients would recommend this type of prosthesis to their peers but only 47% of them would agree to pay a large increase in the cost of treatment compared to a two-implant overdenture. Conclusions: The addition of a midline third implant to an existing mandibular two-implant overdenture resulted in several improved patient-reported outcomes.

Original languageEnglish
JournalClinical Oral Implants Research
DOIs
Publication statusPublished - Jan 1 2019

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Overlay Denture
Clinical Trials
Patient Satisfaction
Denture Retention
Visual Analog Scale
Health Care Costs
Prostheses and Implants
Costs and Cost Analysis

Keywords

  • clinical trial
  • dental implants
  • mandibular prosthesis
  • overdentures
  • patient satisfaction

ASJC Scopus subject areas

  • Oral Surgery

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A within-subject clinical trial on the conversion of mandibular two-implant to three-implant overdenture : Patient-centered outcomes and willingness to pay. / Emami, Elham; Alesawy, Aminah; de Grandmont, Pierre; Cerutti-Kopplin, Daiane; Kodama, Naoki; Menassa, Mélanie; Rompré, Pierre; Durand, Robert.

In: Clinical Oral Implants Research, 01.01.2019.

Research output: Contribution to journalArticle

Emami, Elham ; Alesawy, Aminah ; de Grandmont, Pierre ; Cerutti-Kopplin, Daiane ; Kodama, Naoki ; Menassa, Mélanie ; Rompré, Pierre ; Durand, Robert. / A within-subject clinical trial on the conversion of mandibular two-implant to three-implant overdenture : Patient-centered outcomes and willingness to pay. In: Clinical Oral Implants Research. 2019.
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abstract = "Objectives: To examine the impact of adding a third midline implant with stud attachment to a mandibular two-implant overdenture on patient-oriented outcomes. Methods: In this pre–post design clinical trial, following the standard procedures, mandibular two-implant overdentures of 17 edentulous individuals (61.9 ± 6.6 years) were converted to three-implant overdentures by adding a stud attachment to an unloaded midline implant. Patient-oriented outcomes included patient expectations and satisfaction with implant overdenture as well as willingness to pay the cost of conversion. Data were collected at baseline and at the 6-week follow-up using visual analog and binary scales as well as open-ended questions. Statistical analysis included descriptive statistics, Spearman's correlation, Fisher exact test, Mann–Whitney U test, and the exact sign test. Results: After connecting the third midline implant to the mandibular two-implant overdenture, there was a statistically significant decrease in the anteroposterior movement (p = 0.005) as evaluated by clinicians. Moreover, study participants reported an increase in perceived stability of the overdenture (95{\%} CI; 0.68–1.00, p = 0.002) and in their ability to speak (95{\%} CI; 0.63–1.00, p = 0.008). The addition of a third implant met the expectations of 94{\%} of patients in regard to lower denture stability, 100{\%} for retention, and 82.4{\%} for comfort. The mandibular three-implant overdenture increased patient general satisfaction over a short period of time, but this improvement was not statistically significant. About 80{\%} of patients would recommend this type of prosthesis to their peers but only 47{\%} of them would agree to pay a large increase in the cost of treatment compared to a two-implant overdenture. Conclusions: The addition of a midline third implant to an existing mandibular two-implant overdenture resulted in several improved patient-reported outcomes.",
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AU - Alesawy, Aminah

AU - de Grandmont, Pierre

AU - Cerutti-Kopplin, Daiane

AU - Kodama, Naoki

AU - Menassa, Mélanie

AU - Rompré, Pierre

AU - Durand, Robert

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AB - Objectives: To examine the impact of adding a third midline implant with stud attachment to a mandibular two-implant overdenture on patient-oriented outcomes. Methods: In this pre–post design clinical trial, following the standard procedures, mandibular two-implant overdentures of 17 edentulous individuals (61.9 ± 6.6 years) were converted to three-implant overdentures by adding a stud attachment to an unloaded midline implant. Patient-oriented outcomes included patient expectations and satisfaction with implant overdenture as well as willingness to pay the cost of conversion. Data were collected at baseline and at the 6-week follow-up using visual analog and binary scales as well as open-ended questions. Statistical analysis included descriptive statistics, Spearman's correlation, Fisher exact test, Mann–Whitney U test, and the exact sign test. Results: After connecting the third midline implant to the mandibular two-implant overdenture, there was a statistically significant decrease in the anteroposterior movement (p = 0.005) as evaluated by clinicians. Moreover, study participants reported an increase in perceived stability of the overdenture (95% CI; 0.68–1.00, p = 0.002) and in their ability to speak (95% CI; 0.63–1.00, p = 0.008). The addition of a third implant met the expectations of 94% of patients in regard to lower denture stability, 100% for retention, and 82.4% for comfort. The mandibular three-implant overdenture increased patient general satisfaction over a short period of time, but this improvement was not statistically significant. About 80% of patients would recommend this type of prosthesis to their peers but only 47% of them would agree to pay a large increase in the cost of treatment compared to a two-implant overdenture. Conclusions: The addition of a midline third implant to an existing mandibular two-implant overdenture resulted in several improved patient-reported outcomes.

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