Rehabilitation of Atrophic Mandible with Ultrashort Implants Combined with Photobiomodulation Therapy: A Split-Mouth Design Study

Sara Mahmoud Zayed, Marwa Gamal Noureldin, Sara Mahmoud Zayed, Marwa Gamal Noureldin

Abstract

Background: Atrophic edentulous mandible is a challenging clinical condition. Studies assessing the use of ultrashort implants to support overdentures are scarce; the optimum photobiomodulation (PBM) dose for enhancing osseointegration is yet unknown.

Objective: This study aimed to evaluate and compare mandibular overdentures assisted by two versus four ultrashort implants with adjunctive PBM therapy using two doses.

Materials and methods: A total of 36 implants were placed in 12 edentulous male participants and they were randomly allocated to Group I (mandibular overdentures assisted by two ultrashort implants) or Group II (by four ultrashort implants). Fully guided implant placement was performed, and then a split-mouth design was implemented. The participants received PBM by diode laser (660 nm). Dose A (3.75 J/cm2) and Dose B (7.5 J/cm2) were applied to the right and left implant (s), respectively. Implant stability, peri-implant probing depth (PIPD), and modified gingival index (MGI) were evaluated at baseline, and at 6 and 12 months after loading.

Results: After 12 months, the implant stability values were significantly higher in Group II compared with Group I (P < 0.001). A significant difference was observed in between the PIPDs of both groups (Group I: 2.35 ± 0.54 mm; Group II: 1.69 ± 0.35 mm;P= 0.001). The mean MGI values were low for both groups (Group I: 0.75 ± 0.58; Group II: 0.51 ± 0.41).

Conclusions: Mandibular overdentures supported by four ultrashort implants had a more favorable clinical outcome, while PBM doses A and B were comparable in all evaluated parameters.

Trial registration: ClinicalTrials.gov Identifier: NCT03540316.

Keywords: Atrophic mandible; implant stability; osseointegration; overdentures; photobiomodulation; short implants.

Conflict of interest statement

There are no conflicts of interest.

Copyright: © 2022 Saudi Journal of Medicine & Medical Sciences.

Figures

Figure 1
Figure 1
Patient recruitment flow diagram
Figure 2
Figure 2
Super-imposition and guide planning for two and four implants
Figure 3
Figure 3
Osteotomy preparation and final implant seating through the surgical guide
Figure 4
Figure 4
(a) PBM device settings (b) Group I, implants were inserted bilaterally in the canine area, and Group II in the canine and second premolar area (c) PBM therapy irradiated intraorally

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Source: PubMed

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