Clinical feasibility of mandibular implant overdenture retainers submitted to immediate load.
BACKGROUND
Millions of people around the world do not have access to the benefits of osseointegration. Treatments involving oral rehabilitation with overdentures have been widely used by specialists in the oral medicine field. This is an alternative therapy for retention and stability achievement in total prosthesis with conventional treatment, and two implants are enough to establish a satisfactory overdenture.


OBJECTIVE
The objectives of the study were to evaluate 16 patients of both sexes, with an average age of 47.4±4 years, using electromyographic analysis of masseter and temporal muscles and analyse the increase of incisive and molar maximal bite force with their existing complete dentures and following mandibular implant overdenture therapy to assess the benefits of this treatment.


METHODS
For these tests, the Myosystem-BR1 electromyograph and the IDDK Kratos dynamometer were used. Statistical analysis was performed using the repeated measures test (SPSS 17.0).


RESULTS
A decrease in electromyographic activity during the rest, lateral and protrusion movements and increase of the maximal incisive and molar bite force after 15months with a mandibular implant overdenture was observed.


CONCLUSIONS
All the patients in this study reported a considerable improvement in the masticatory function and prostheses stability following treatment. It is possible to propose that the use of mandibular implants overdenture should become the selected treatment for totally edentulous patients to facilitate oral function and quality of life.
da Silva
Ronaldo José
RJ
Department of Prosthesis, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil.
Issa
João Paulo Mardegan
JP
Semprini
Marisa
M
da Silva
Cláudia Helena Lovato
CH
de Vasconcelos
Paulo Batista
PB
Celino
Clélia Aparecida
CA
Siéssere
Selma
S
Regalo
Simone Cecilio Hallak
SC
D000328:Adult; D000368:Aged; D001732:Bite Force; D015921:Dental Implants; D003766:Dental Occlusion; D019094:Dental Prosthesis, Implant-Supported; D003781:Denture Retention / Q000295:instrumentation*; D003826:Denture, Complete, Lower; D003828:Denture, Overlay; D004576:Electromyography; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D057893:Immediate Dental Implant Loading; D007180:Incisor / Q000502:physiology; D008297:Male; D008334:Mandible / Q000601:surgery*; D008406:Masseter Muscle / Q000502:physiology; D008409:Mastication / Q000502:physiology; D008875:Middle Aged; D008963:Molar / Q000502:physiology; D009119:Muscle Contraction / Q000502:physiology; D016059:Range of Motion, Articular / Q000502:physiology; D013060:Speech / Q000502:physiology; D013703:Temporal Muscle / Q000502:physiology
D015921:Dental Implants