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. 2022 Jul;16(3):619-626.
doi: 10.1055/s-0041-1736416. Epub 2021 Dec 8.

Implant Stability Changes for a Single Implant Mandibular Overdenture

Karim Fouda  1 , Ahmed Fahmy  1 , Khaled Aziz  1 , Marwa Abdel Aal  1 , Amr Naguib  1 , Nouran Abdel Nabi  1
Affiliations

Implant Stability Changes for a Single Implant Mandibular Overdenture

Karim Fouda et al. Eur J Dent. 2022 Jul.

Abstract

Objectives: To compare the changes in implant stability for the nonsubmerged and submerged protocols for a single-implant retained mandibular overdenture using Cendres and Metaux Locator attachment throughout a 24-month follow-up.

Materials and methods: Eighty edentulous patients who were seeking to install a single implant in the midline of the completely edentulous mandible. At the day of implant installation, patients were randomized into two groups using sealed envelopes: the nonsubmerged and submerged groups. After 3 months of healing period, randomization using sealed envelopes was performed and patients were randomized to receive the Cendres and Metaux Locator attachment. The periotest readings were recorded using the Periotest M device, every 3 months for the first year and annually in the second year. The scope of this clinical trial focused only on results of the Cendres and Metaux attachment.

Statistical analysis: The Mann-Whitney U-test was used for comparison between study groups for independent samples. Two-sided p-values less than 0.05 were considered statistically significant.

Results: There was no statistically significant difference between the mean periotest readings of both groups throughout the 24-month follow-up. Both groups showed an improvement in mean periotest readings with the submerged group tending to show greater stability at 6, 12, and 24-month follow-ups.

Conclusions: The nonsubmerged and the submerged healing protocols resulted in reliable periotest readings with the submerged group showing greater improvement than the nonsubmerged, although this improvement is nonsignificant when using the Cendres and Metaux attachment for a single mandibular overdenture.

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Conflict of interest statement

None declared.

Figures

Fig. 1
Fig. 1
Consort flow diagram showing the number of included patients and drop-outs during 24-month follow-up period.
Fig. 2
Fig. 2
( A ) CM-LOC attachment screwed inside the patient's mouth. ( B ) The PEKK green cap of the CM-LOC attachment after picked up in the fitting surface of the denture. CM-LOC, Cendres and Metaux Locator.
Fig. 3
Fig. 3
( A ) Mean PTV between the nonsubmerged (NS) and submerged (S) groups of patients with CM-LOC attachment. ( B ) Mean PTV changes between the nonsubmerged (NS) and submerged (S) groups of patients with CM-LOC attachment. CM-LOC, Cendres and Metaux Locator.
See this image and copyright information in PMC

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