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. 2022 Dec 9;8(1):64.
doi: 10.1186/s40729-022-00460-0.

The performance of two-implant overdentures in the atrophic maxilla: a case series with 1-year follow-up

Pieter Onclin  1 , Caroline M Speksnijder  2 , Henny J A Meijer  3   4 , Arjan Vissink  3 , Gerry M Raghoebar  3
Affiliations

The performance of two-implant overdentures in the atrophic maxilla: a case series with 1-year follow-up

Pieter Onclin et al. Int J Implant Dent. .

Abstract

Purpose: To assess the implant and prosthesis survival rates, the clinical, radiographical and patient-related outcome measures, and the masticatory performance of maxillary overdentures supported by two implants in patients with an atrophic maxilla.

Methods: In this case series, 15 consecutive patients who were eligible for maxillary implant overdenture therapy, but who had insufficient bone volume to place at least four implants and were unwilling to be treated with reconstructive surgery were asked to participate. After giving consent, participants received two implants in the maxilla under local anaesthesia. After 3 months of osseointegration, a maxillary overdenture with palatal coverage and solitary attachments was fabricated. Implant and overdenture survival, marginal bone level change, clinical outcome measures, masticatory performance and patient-related outcomes were evaluated at baseline and 1 year after overdenture placement.

Results: Fourteen out of 15 participants completed the follow-up period of 12 months. Implant and overdenture survival rate were 89.3% and 85.7%, respectively. Change in marginal bone level (- 0.5 ± 0.7 mm), change in probing depth (0.0 ± 1.0 mm), and clinical outcomes were favourable. Masticatory performance and patient-related outcomes improved significantly compared to baseline. Complications were minimal.

Conclusions: Within the limitations of this study, it can be concluded that patients with extreme resorption of the maxilla that are unwilling to be treated with reconstructive surgery, benefit from two-implant maxillary overdentures retained by solitary attachments in terms of improved masticatory functioning and denture satisfaction. However, they have relatively high risk of implant loss.

Trial registration: UMCG Trial Register (RR201900060), registered 22 January 2019.

Keywords: Atrophic; Edentulous; Implant; Masticatory performance; Maxilla; Overdenture.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
3D planning of the implant locations
Fig. 2
Fig. 2
a Patient with a maxillary IOD after 12 months. b Overdenture of the same patient. c Panoramic radiograph of the same patient
Fig. 3
Fig. 3
Follow-up flow diagram
Fig. 4
Fig. 4
Implant survival rate
Fig. 5
Fig. 5
Prosthesis survival rate
See this image and copyright information in PMC

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References

    1. Werbelow L, Weiss M, Schramm A. Long-term follow-up of full-arch immediate implant-supported restorations in edentulous jaws: a clinical study. Int J Implant Dent. 2020;6(1):34. doi: 10.1186/s40729-020-00232-8. - DOI - PMC - PubMed
    1. Slot W, Raghoebar GM, Cune MS, Vissink A, Meijer HJA. Maxillary overdentures supported by four or six implants in the anterior region: 10-year randomized controlled trial results. J Clin Periodontol. 2022 doi: 10.1111/jcpe.13726. - DOI - PMC - PubMed
    1. Akca K, Cehreli MC, Uysal S. Marginal bone loss and prosthetic maintenance of bar-retained implant-supported overdentures: a prospective study. Int J Oral Maxillofac Implants. 2010;25:137–145. - PubMed
    1. Mangano C, Mangano F, Shibli JA, Ricci M, Sammons RL, Figliuzzi M. Morse taper connection implants supporting "planned" maxillary and mandibular bar-retained overdentures: a 5-year prospective multicenter study. Clin Oral Implants Res. 2011;22:1117–1124. doi: 10.1111/j.1600-0501.2010.02079.x. - DOI - PubMed
    1. Boven GC, Speksnijder CM, Meijer HJA, Vissink A, Raghoebar GM. Masticatory ability improves after maxillary implant overdenture treatment: a randomized controlled trial with 1-year follow-up. Clin Implant Dent Relat Res. 2019;21:369–376. doi: 10.1111/cid.12721. - DOI - PMC - PubMed

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