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. 2015 May;7(5):5-10.

Implant Supported Distal Extension over Denture Retained by Two Types of Attachments. A Comparative Radiographic Study by Cone Beam Computed Tomography

Ahmed I Mahrous  1 , Hussien A Aldawash  1 , Tarek A Soliman  1 , Fahad H Banasr  2 , Ahmed Abdelwahed  3
Affiliations

Implant Supported Distal Extension over Denture Retained by Two Types of Attachments. A Comparative Radiographic Study by Cone Beam Computed Tomography

Ahmed I Mahrous et al. J Int Oral Health. 2015 May.

Abstract

Background: This study was conducted to compare and evaluate the effect of two different attachments (locator attachment and ball and socket [B&S] attachment) on implants and natural abutments supporting structures, in cases of limited inter-arch spaces in mandibular Kennedy Class I implant supported removable partial over dentures by measuring the bone height changes through the cone beam radiographic technology.

Materials and methods: Two implants were positioned in the first or second molar area following the two-stage surgical protocol. Two equal groups were divided ten for each: Group I: Sides were the placed implants restored by the locator attachment. Group II: The other sides, implants were restored by B&S attachment. Evaluation of the implants and main abutments supporting structures of each group was done at the time of removable partial over denture insertion, 6, 12 and 18 months by measuring the bone height changes using cone beam computed tomography.

Results: Implants with locator attachment showed marginal bone height better effects on implants and main abutments supporting structures.

Conclusion: Implants restored by locator attachment shows better effects on bone of both main natural abutments and implant than those restored with ball and socket.

Keywords: Implant supported partial over denture; limited inter-arch space; locator attachment.

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Conflict of interest statement

Conflicts of Interest: None

Figures

Figure 1
Figure 1
Mounted casts on articulator for identifying the inter-arch space.
Figure 2
Figure 2
Evaluation of inter arch space after locator attachment placement.
Figure 3
Figure 3
Placed ball and socket attachment male potion intraorally.
Figure 4
Figure 4
Mesial and distal marginal boneheight measurments around implants.
Figure 5
Figure 5
Buccal and lingual marginal bone height measurements around the main abutment.
Graph 1
Graph 1
A column chart of the mean values of bone loss in both groups around implant at the different intervals of the follow-up period.
Graph 2
Graph 2
A linear curve of the mean values of bone loss in both groups around abutment at the different intervals of the follow-up period.
See this image and copyright information in PMC

References

    1. Budtz-Jörgensen E. Restoration of the partially edentulous mouth – A comparison of overdentures, removable partial dentures, fixed partial dentures and implant treatment. J Dent. 1996;24(4):237–44. - PubMed
    1. Amin H, Mahmoud M, Mohie-Eldin H. The effect of two titanium and chrome cobalt clasp assemblies on abutment teeth and their supporting structures in distal extension cases. Egypt Dent J. 2001;47:843–50.
    1. Grasso JE, Miller EL. 3rd ed. Mosby: St. Louis; 1991. Removable Partial Prosthodontics; pp. 205–8.
    1. Krol AJ. Clasp design for extension-base removable partial dentures. J Prosthet Dent. 1973;29(4):408–15. - PubMed
    1. McCartney JW, Thompson GA, Goheen KL. Silicone putty diagnostic casts for edentulous patients wearing complete dentures. J Prosthet Dent. 1994;71(2):220–1. - PubMed

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