Search

Copyright of Revista Oral is the property of Benemerita Universidad Autonoma de Puebla and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction. Masticatory efficiency (ME) is the individual ability to achieve crushing and grinding, with the help of saliva, through an undetermined number of masticatory cycles. The maximum bite force in kilograms force (MBF/kgf) is the maximum force generated between the teeth of both arches. Objective. To relate MBF/kgf and ME in patients with and without posterior teeth (PT). Methodology. Cross-sectional, observational, and descriptive study. Forty patients who attended in the Masticatory Physiology Laboratory of the Universidad Autónoma Metropolitana-Xochimilco, Ciudad de México, who previously voluntarily they accepted informed consent, were registered; divided into two groups: group A, 20 subjects with complete PT; and group B, 20 with incomplete PT. The ME recording technique consisted of measuring the degree of crushing of silicone tablets by condensation, with a diameter of 20 mm by 5 of thick and 2.03 g, the fragments were collected to perform the sieve (Mesh). The MBF/kgf recordings were made with the T-Scan® EH-2 system, positioning the sensor between the arches, exerting the MBF for 28 sec. Results. Of the 40 subjects, 18 (45%) were female and 22 (55%) males, with a mean age of 23.88 ± 9.6 years. In group A, the MBF/kgf was 35.65 ± 10.30, and the MP was 62.51 ± 21.99. In group B, the MBF/kgf was 20.61 ± 13.45 and the MP was 47.20 ± 25.73. Conclusions. The importance of the relationship between PT in relation to MBM/kgf, and ME was observed, which showed that patients with incomplete dentures present less trituration and grinding, which can directly affect the digestive system, therefore, the need to keep the highest number of PT in the mouth was demonstrated. [ABSTRACT FROM AUTHOR]

Introduction. The Maximum Bite Force (MBF) is a functional indicator of the masticatory system that indicates the force in kilograms force (Kf), which the dental teeth apply during chewing by means of the mandibular lifting muscles that reach high forces over short distances. There is bibliographic evidence that MBF is related to facial morphology. Objective. To identify the relationship between the Mesofacial-Brachifacial-Dolichofacial Biotypes and the MBF. Methodology. Cross-sectional, descriptive, prospective, observational study 60 young adults, both sexes, who attended the Masticatory Physiology Laboratory of the Universidad Autonoma Metropolitana Unidad Xochimilco (Mexico City) and voluntarily agreed to participate in the study. They were divided into three groups of 20 subjects each: A) mesofacial, B) brachifacial and C) dolichofacial. The facial type was measured and recorded with the Truper® digital calibrator, as well as the MBF of each young person using the T-Scan® EH-2 (Research) system, since it is an instrument that allows to evaluate the entire occlusal arch, without interfering in the interoclusal distance. Results. Mean age 22 ± 3 years and percentages of women 55% and men 45%. The Kf of the three groups: A) 46.07 Kf, for group B) 36.85 Kf, and group C) 30.98 Kf. With the ANOVA test, in the statistical program SPSS version 22. Statistically significant differences were found between A and C with a p = 0.003, between group A and B the p = 0.05 and no statistically significant difference between group B and C with a p = 0.275. Conclusion. It was determined that subjects with mesofacial and brachifacial biotype have the same statistical significance of MBF, therefore the null hypothesis was accepted, in which the brachifacial biotype is not the one with the greatest force in bite Kf. [ABSTRACT FROM AUTHOR]

Introduction. Masticatory efficiency (ME) is the degree of trituration and grinding in which a food can be subjected. The maximum bite force (MBF) refers to the maximum occlusal force that a person can exert during chewing. Factors such as ME, MBF, masticatory cycles and trituration time, allow us to study the stomatognathic apparatus. Objective. To determine the correlation between MBF and ME with respect to the time and cycles required to prepare food before swallowing. Method. Cross-sectional, descriptive, observational study. Thirty-one young adults were enrolled at the UAM-Xochimilco (Laboratory of Masticatory Physiology), Mexico City, who voluntarily subscribed to informed consent. The Edlund J, Lamm CJ technique, was used Optosil® tablets. Patients were instructed to triturate a tablet in the usual way until ready to swallow and at the same time recorded with a stopwatch their mastication. The T-Scan®EH2 (Research) system was used to register the MBF, since it is an instrument that allows evaluation of the entire occlusal arch, without interfering with the interocclusal distance. The SPSS program (version 20), and the Pearson correlation parametric test were used. Results. Mean age 22 ± 3 years, men (19.4%), women (80.6%), mean MBF (45.85 kgf ± 11.20), and ME (52.80 ± 20.94%). The Pearson correlation test was used and was identified statistically significant differences (p < 0.05) in MBF-Time and ME-Cycles. Conclusion. It was determined that the subjects are correlated with the highest MBF values and therefore the subjects required less trituration time and for the masticatory cycles there was also an association with ME. [ABSTRACT FROM AUTHOR]

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: identify differences in inhibitory masseteric reflex (IMR) among children and young adults. Material and methods: 66 children (group 1) and 65 adults in (group 2), both groups without alterations in temporomandibular joint and occlusion. The IMR was recorded with surface electromyography over the masseter muscle. During sub-maximal occlusion force was automatically triggered a mechanical stimulus on the chin with a force of 2N to evoke the IMR. On the register was measured: duration of inhibition right-left, amplitude of inhibition right-left, length of right- left potentiation and amplitude of right- left potentiation. Results: Age group 1= 24.8 ± 3.7, 32 women and 34 men. Age Group 2 = 21.66 ± 3.83, 47 women and 18 men. Significant difference was identified by the t Students, the amplitude on both sides between groups (t = 7.28, p = 0.000 and t = 6.47, p = 0.000 respectively). Using Pearson correlation matrix identified more significant correlations (p = 0.05) between the variables than in the potentiation in group 2. Conclusions: the response of the potentiation is organized similarly in children and adults. The process of maturation of the masticatory motor tasks, explored by IMR, is expressed through the organization of the inhibitory response. [ABSTRACT FROM AUTHOR]

Copyright of Revista ADM is the property of Asociacion Dental Mexicana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)