Removable implant-prosthodontic rehabilitation of the edentulous mandible: five-year results of different prosthetic anchorage concepts.
Int J Oral Maxillofac Implants
; 25(3): 589-97, 2010.
Article
em En
| MEDLINE
| ID: mdl-20556260
ABSTRACT
PURPOSE:
The present study evaluated implant and peri-implant outcomes as well as prosthodontic maintenance efforts for implant/bar-supported mandibular prostheses with different prosthesis anchorage systems. MATERIALS ANDMETHODS:
Seventy-six patients who received two or four interforaminal implants were assigned to one of three different bar designs and subsequently to different prosthesis supporting systems. Forty-nine patients received implants and a mucosa-supported implant-retained overdenture (OD) with an ovoid bar (two implants; design 1) or multiple ovoid bars (four implants; design 2). Twenty-seven patients received four implants and a rigid implant-supported prosthesis (ISP) with a milled bar (design 3). Implant survival, peri-implant parameters (marginal bone resorption, pocket depth, and plaque, bleeding, gingival, and calculus indices), and postinsertion prosthodontic maintenance were followed over a 5-year period and compared among the different retention modalities. At the most recent follow-up examination, subjective patient satisfaction was additionally evaluated using a simplified scoring system (ranging from 1 = not satisfactory to 5 = excellent).RESULTS:
Implant survival rates (100%) and all peri-implant parameters evaluated showed no differences among the three designs used for implant prosthesis anchorage. Prosthodontic maintenance did not differ between the different ODs (OD design 1 average of 1.04 maintenance visits/year/patient; OD design 2 1.2 maintenance visits/year/patient), but it was significantly lower for the dentures that were rigidly stabilized with milled bars (ISP 0.37 maintenance visits/year/patient). A high subjective satisfaction rate (range 4.5 to 5.0) was registered at the final examination, without any differences among the designs used.CONCLUSIONS:
Rigid anchorage with milled bars on four-implant prostheses combined with a metal-reinforced framework showed a lower extent of prosthodontic maintenance issues than round bars on two- or four-implant overdentures with resilient denture stabilization. Nevertheless, implants and peri-implant structures were not negatively affected by either resilient or rigid anchorage mechanisms.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Arcada Edêntula
/
Retenção em Prótese Dentária
/
Planejamento de Prótese Dentária
/
Prótese Dentária Fixada por Implante
/
Revestimento de Dentadura
Tipo de estudo:
Clinical_trials
/
Observational_studies
/
Prognostic_studies
Limite:
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article