Bilateral Supra- and Infrahyoid EMG Activity During Eccentric Jaw Clenching and Tooth Grinding Tasks in Subjects with Canine Guidance or Group Function

CRANIO® ◽  
2012 ◽  
Vol 30 (3) ◽  
pp. 209-217 ◽  
Author(s):  
Saúl Valenzuela ◽  
Constanza Portus ◽  
Rodolfo Miralles ◽  
María José Campillo ◽  
Hugo Santander ◽  
...  
Keyword(s):  
Emg Activity ◽  
Group Function ◽  
Tooth Grinding ◽  
Canine Guidance

Awake teeth grinding in participants with canine guidance or group function: Effect on diaphragm EMG activity, heart rate, and oxygen saturation

CRANIO® ◽  
2019 ◽  
Vol 38 (6) ◽  
pp. 412-418
Author(s):  
Saúl Valenzuela ◽  
Rodolfo Miralles ◽  
María Ignacia Muñoz ◽  
Hugo Santander ◽  
Claudia Zúñiga ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Saturation ◽  
Emg Activity ◽  
Group Function ◽  
Teeth Grinding ◽  
Canine Guidance

scholarly journals Electromyographic activity of the masseter muscle in individuals with group function and canine guidance

2021 ◽  
Vol 15 (4) ◽  
pp. 232-238
Author(s):  
Nathália de Oliveira Domingos ◽  
Roberto Bernardino Júnior ◽  
Patrícia Teixeira de Carvalho Gaspar ◽  
Frederico Balbino Lizardo ◽  
César Ferreira Amorim ◽  
...  
Keyword(s):  
Clinical Evidence ◽  
Masticatory Muscles ◽  
Emg Activity ◽  
Electromyographic Activity ◽  
Group Function ◽  
Canine Guidance ◽  
Student’S T ◽  
The Right ◽  
Masseter Muscles ◽  
Student’S T Test

Background. There is no general consensus in restorative dentistry about which lateral guidance should be established. Some studies have shown that canine guidance decreases the tension of masticatory muscles. Others have reported that group function might achieve a better physiologic distribution of occlusal forces. Also, some reports have shown that both guidances are equally acceptable. Despite all discussions, clinical evidence of one guidance being superior to another is limited. Thus, this study aimed to analyze the electromyographic (EMG) activity of masseter muscles in individuals with group function and canine guidance. Methods. Twenty volunteers of both genders, aged 20-25, were divided into two groups: GF (group function guidance, n=10) and CA (canine guidance, n=10). EMG activity of masseters was captured using surface electrodes during habitual maximum intercuspation (HMI) and right and left lateral jaw movements and recorded using EMG amplitude values (RMS – root means square). Student’s t-test was used to compare mean RMS values between the groups and lateral movements in each group. Results. During HMI, there was no difference in masseter EMG activity between the groups. Both masseters showed higher activity in group GF only on the right side during lateral movements, while the left masseter exhibited higher activity on the nonworking side in both groups. The activity of both masseters distributed by tooth was higher in group CA. Conclusion. During tooth restorative procedures, any guidance is acceptable considering HMI. However, group function guidance is more favorable during lateral movements due to greater dissipation of occlusal pressures.

Natural mediotrusive contact: does it affect the masticatory and neck EMG activity during tooth grinding?

CRANIO® ◽  
2015 ◽  
pp. 1-7 ◽  
Author(s):  
Aler D. Fuentes ◽  
Conchita Martin ◽  
Ricardo Bull ◽  
Hugo Santander ◽  
Mario F. Gutiérrez ◽  
...  
Keyword(s):  
Emg Activity ◽  
Tooth Grinding

Anterior Temporalis and Suprahyoid EMG Activity During Jaw Clenching and Tooth Grinding

CRANIO® ◽  
2011 ◽  
Vol 29 (4) ◽  
pp. 261-269 ◽  
Author(s):  
Karina Aldana ◽  
Rodolfo Miralles ◽  
Aler Fuentes ◽  
Saúl Valenzuela ◽  
María Javiera Fresno ◽  
...  
Keyword(s):  
Emg Activity ◽  
Tooth Grinding ◽  
Anterior Temporalis

Assessment of the Effect of Two Occlusal Concepts for Implant-Supported Fixed Prostheses by Finite Element Analysis in Patients With Bruxism

2014 ◽  
Vol 40 (1) ◽  
pp. 68-75 ◽  
Author(s):  
Evrim Göre ◽  
Gülümser Evlioğlu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Group Function ◽  
Partial Denture ◽  
Fixed Partial Denture ◽  
Dynamic Finite Element Analysis ◽  
Canine Guidance ◽  
Group Function Occlusion ◽  
Main Model

The aim of this study was to evaluate the effects of bruxing forces on implants configured under 2 different occlusal schemes by dynamic finite element analysis. A main model consisting of a 5-unit fixed partial denture supported by 3 implants was simulated with bone, implants, and superstructures. All calculations were made individually for each component, namely porcelain crowns, abutments, abutment screws, implants, and bone. Maximum stresses were found in the group-function occlusion. Group-function loading may result excess stresses on the components compared with canine-guidance loading. According to the results of this study, use of canine guidance is encouraged in bruxers with implant-supported prostheses.

scholarly journals Pattern of disocclusion in patients with complete cleft lip and palate

2006 ◽  
Vol 14 (3) ◽  
pp. 157-161 ◽  
Author(s):  
Daniella Andaluza Dias Matos ◽  
Marcelo Lucchesi Teixeira ◽  
João Henrique Nogueira Pinto ◽  
José Fernando Scarelli Lopes ◽  
Gisele da Silva Dalben
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Group Function ◽  
Posterior Teeth ◽  
Bilateral Group ◽  
Anterior Guidance ◽  
Canine Guidance ◽  
Group 2 ◽  
Occlusal Interferences ◽  
Group 1

OBJECTIVE: to analyze the pattern of disocclusion during excursive mandibular movements and presence or absence of occlusal interferences and occlusal pathologies (gingival recession and abfraction). METHOD: examination of 120 individuals divided into two groups, as follows: Group 1 - 90 patients with complete cleft lip and palate (study group), subdivided into 30 patients with complete left unilateral cleft lip and palate, 30 patients with complete right unilateral cleft lip and palate and 30 patients with complete bilateral cleft lip and palate; Group 2 - 30 individuals without clefts (control group). RESULTS: 58.8% of patients in Group 1 presented unilateral or bilateral canine guidance, 26.6% presented unilateral or bilateral group function and 54.4% presented lateral movements through the posterior teeth. Regarding protrusive movements, 80% presented anterior guidance and 20% presented posterior guidance. In Group 2, 69.6% of individuals presented unilateral or bilateral canine guidance, 43.2% presented unilateral or bilateral group function and only 13.3% presented lateral movements through the posterior teeth; 3.4% presented protrusion through the posterior teeth. CONCLUSIONS: there was no difference in the pattern of disocclusion between subgroups of patients with clefts. Group 2 presented predominance of bilateral group function, whereas Group 1 presented a higher prevalence of posterior guidance during lateral movements. Protrusion occurred primarily through anterior guidance in Group 2 and through the posterior teeth in Group 1. There was high prevalence of occlusal interferences at the molar area for both groups, yet with no correlation with occlusal pathologies (recession and abfraction).

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