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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

In vitro digital image correlation analysis of the strain transferred by screw-retained fixed partial dentures supported by short and conventional implants

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Author(s):
Peixoto, Raniel Fernandes [1] ; Honorio Tonin, Bruna Santos [2] ; Martinelli, Janisse [3] ; Macedo, Ana Paula [2] ; Chiarello de Mattos, Maria Gloria [2]
Total Authors: 5
Affiliation:
[1] Univ Fed Ceara, Fac Pharm Dent & Nursing, Dept Restorat Dent, Rua Monsenhor Furtado S-N, BR-63430355 Fortaleza, Ceara - Brazil
[2] Univ Sao Paulo, Ribeirao Preto Sch Dent, Dept Dent Mat & Prosthodont, Ribeirao Preto, SP - Brazil
[3] Univ Fed Triangulo Mineiro, Sch Dent, Uberaba, MG - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS; v. 103, MAR 2020.
Web of Science Citations: 0
Abstract

Purpose: This study used digital image correlation (DIC) to evaluate the strain transferred by splinted and non-splinted screw-retained fixed partial dentures (FPDs) supported by short and conventional implants. Material and methods: Four polyurethane models were fabricated to simulate half of the mandibular arch with acrylic resin replicas of the first premolar. Short (5 mm) and/or conventional (11 mm) implants replaced the second premolar and the first and second molars. Groups were: G1, two conventional (second premolar and first molar) and one short (second molar) implant; G2, one conventional (second premolar) and two short (first and second molar) implants; G3, three short implants; and G4, three conventional implants. Splinted (S) and non-splinted (NS) FPDs were screwed to the implant abutments. Occlusal load and a single point load on the second premolar, both of 250 N, were applied. Strain in the horizontal direction MO was calculated and compared using the DIC software. Results: Splinted crowns presented the highest strain magnitudes of all tested groups (p < 0.05). The strain was concentrated near the short implants and presented a higher magnitude compared to conventional implants, especially in G2S (-560.13 mu S), G3S (-372.97 mu S), and G4S (-356.67 mu S). Conclusions: Splinted crowns presented a higher strain concentration around the implants, particularly near the implant replacing the first molar. A combination of short and conventional implants seems to be a viable alternative for the rehabilitation of the posterior edentulous mandible with reduced bone height. (AU)

FAPESP's process: 12/09808-8 - Qualitative and quantitative analysis of the tensions generated by metaloplastic fixed crowns, splinted and non-splinted, in the posterior region of the mandible, rehabilitated with regular and short implants, by digital image correlation method.
Grantee:Raniel Fernandes Peixoto
Support type: Scholarships in Brazil - Master