Masticatory muscle activity evaluation by electromyography in subjects with zygomatic implants
Med. oral patol. oral cir. bucal (Internet)
; 22(3): e392-e397, mayo 2017. ilus, tab
Artigo
em Inglês
| IBECS
| ID: ibc-163209
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
BACKGROUND:
Zygomatic implants are an alternative treatment in the rehabilitation of atrophic maxilla to promote stability in the stomatognathic system. The aim of this study was to compare the electromyographic (EMG) activity of masseter and temporalis muscles in controls and in individuals with complete implant-supported dentures anchored in the zygomatic bone. MATERIAL ANDMETHODS:
Fifty-four volunteers of both genders (mean age 52.5 years) were selected and distributed into two groups Individuals with zygomatic implant (ZIG; n=27) and fully dentate patients (CG; n=27). MyoSystem-BR1 was used to assess masseter and temporalis muscles EMG activity in different mandibular movements protrusion, clenching, maximal voluntary contraction (MVC) with Parafilm M(R), right and left laterality and chewing (peanuts and raisins). Data was processed, normalized (MVC) and analyzed using the SPSS 21.0. Student t-test (P ≤ 0.05) was used for group comparison.RESULTS:
The results were statistically significant (P ≤ 0.05) for protrusion, clenching, right and left laterality and raisin chewing. For the mandibular posture conditions, the ZIG obtained higher EMG activity patterns when compared to CG. For the masticatory performance during chewing of peanuts and raisins, the ZIG showed higher EMG mean values when compared to CG.CONCLUSIONS:
The zygomatic implant promoted an active response of the muscle fibers (hyperactivity) during both mandibular posture and chewing conditions, probably due to the absence of periodontal receptors, which play a significant role for preparing a bolus for swallowing
Texto completo:
Disponível
Coleções:
Bases de dados nacionais
/
Espanha
Base de dados:
IBECS
Assunto principal:
Implantação Dentária
/
Eletromiografia
/
Músculos da Mastigação
Limite:
Humanos
Idioma:
Inglês
Revista:
Med. oral patol. oral cir. bucal (Internet)
Ano de publicação:
2017
Tipo de documento:
Artigo
Instituição/País de afiliação:
University of São Paulo/Brazil