Mandibular overdentures retained by one or two implants: comparison between mini implants and conventional implants with different types of connection - photoelastic and finite element analysis

• Grant number: 18/03136-4
• Support Opportunities: Scholarships in Brazil - Master
• Effective date (Start): December 01, 2018
• Effective date (End): February 29, 2020
• Field of knowledge: Health Sciences - Dentistry - Dental Clinics
• Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Marcelo Ferraz Mesquita
• Grantee: Guilherme Almeida Borges
• Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil

Abstract

The present study will evaluate the biomechanical behavior of mandibular overdentures retained by one and two implants (mini implants and standard implants with cone morse connection, external hexagon and internal hexagon) by photoelastic and finite element analysis under loading application. Groups will be structured by photoelastic mandibular casts that will be modeled and transferred to a computer in order to perform the finite element analysis, simulating the position of one mini implant at the midline region (Group M1); two mini implants in the inferior canine regions (Group M2); one cone morse implant at the midline region (Group CM1); two cone morse implants in the inferior canine region (Group CM2); one external hexagon implant at the midline region (Group HE1); two external hexagon implants in the inferior canine region (Group HE2); one internal hexagon implant at the midline region (Group HI1); two internal hexagon implants in the inferior canine region (Group HI2). The photoelastic models will be positioned in the polariscope with a bilateral loading (150-N) simultaneously in the first molars region. The 3D finite element analysis virtual models will receive a load (100-N) applied to the incisal edge of the mandibular central incisors at a 30- degree angle. Data will be submitted to appropriate statistical analysis, aiming to verify the agreement values of tension obtained from each technique.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BORGES, GUILHERME ALMEIDA; CAMACHO PRESOTTO, ANNA GABRIELLA; CALDAS, RICARDO ARMINI; PISANI, MARINA XAVIER; MESQUITA, MARCELO FERRAZ. Is one dental mini-implant biomechanically appropriate for the retention of a mandibular overdenture? A comparison with Morse taper and external hexagon platforms. JOURNAL OF PROSTHETIC DENTISTRY, v. 125, n. 3, p. 491-499, MAR 2021. (18/03136-4, 14/19098-3)

BORGES, GUILHERME ALMEIDA; COSTA, RAPHAEL CAVALCANTE; NAGAY, BRUNA EGUMI; MAGNO, MARCELA BARAUNA; MAIA, LUCIANNE COPLE; BARAO, VALENTIM ADELINO R.; MESQUITA, MARCELO FERRAZ. Long-term outcomes of different loading protocols for implant-supported mandibular overdentures: A systematic review and meta-analysis. JOURNAL OF PROSTHETIC DENTISTRY, v. 125, n. 5, p. 14-pg., 2021-04-30. (18/04630-2, 18/03136-4)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BORGES, Guilherme Almeida. Biomechanical performance of mini-implants as mandibular overdenture retainers: in vitro and in silico study. 2020. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba Piracicaba, SP.