Comparison of masticatory efficiency according to Angle's classification of malocclusion

Abstract

ObjectiveThe objective of this study was to investigate the differences in masticatory efficiency among patients with different Angle's classes of malocclusion and to assess the correlation between masticatory efficiency and the occlusal contact area.MethodsThe mixing ability index (MAI) was calculated for measuring masticatory efficiency of 61 adult patients according to Angle's classifications of malocclusion. The study included 25, 15, and 21 patients with Angle's Class I, II, and III malocclusions, respectively. Silicone interocclusal recording material was used to measure the occlusal contact area.ResultsBoth the MAI and occlusal contact area showed the highest average values in the Class I malocclusion group, followed by the Class II and Class III malocclusion groups. No significant difference was observed in the MAI values between the Class I and Class II malocclusion groups (p > 0.05), whereas a significant difference was observed between the Class I and Class III malocclusion groups (p < 0.01) and between the Class II and Class III malocclusion groups (p < 0.05). A weak positive correlation was also observed between the MAI and occlusal contact area (p < 0.01, r2 = 0.13).ConclusionsThe results of this study indicated that masticatory efficiency was the highest in patients with Angle's Class I malocclusion, followed by those with Angle's Class II and Angle's Class III malocclusions. Moreover, a weak positive correlation was observed between masticatory efficiency and the occlusal contact area.

Individual and contextual factors associated with traumatic dental injuries in a population of Brazilian adolescents

“…The measurement of maxillary and mandibular overjet was evaluated in millimeters (mm) and divided into normal and more than 3 mm. Angle's classification was used for the molar ratio investigation, based on the relation of the first permanent molars, which resulted in the categories: class I, normal or neutroclusion in which the triangular crest of the mesiobuccal cusp (MB) of the first permanent maxillary molar occludes in the MB groove of the first lower permanent molar; class II in which “distal relation” of the mandible is observed relative to the maxilla, and class III in which there is “mesial relation” of the mandible with the maxilla …”

“…Angle's classification was used for the molar ratio investigation, based on the relation of the first permanent molars, which resulted in the categories: class I, normal or neutroclusion in which the triangular crest of the mesiobuccal cusp (MB) of the first permanent maxillary molar occludes in the MB groove of the first lower permanent molar; class II in which "distal relation" of the mandible is observed relative to the maxilla, and class III in which there is "mesial relation" of the mandible with the maxilla. 21 Individual enabling variables included monthly per capita income and type of dental service used (public, private, private plan, or other). The original categories of monthly per capita income were subdivided into: up to R$ 250, from R$ 251 to R$ 500 and over R$ 500, calculated by dividing the average family income by the number of people in each house.…”

Orofacial features and pediatric dentistry in the long-term management of Infantile Pompe Disease children

“…On the other hand, Class III malocclusion is associated with a reduced masticatory efficiency [ 20 ], so the use of orthodontic devices to correct Class III skeletal malocclusion may determine a significant improvement in mastication and feeding ability that is often reduced in Pompe Disease children due to muscle weakness.…”

Использование Carriere Motion 3D в практике врача-ортодонта. Систематический обзор литературы

“…По одной из наиболее распространенных в ортодонтии классификаций Edward Angle, малокклюзию принято разделять на 3 типа, основываясь на расположении первого моляра верхней челюсти относительно первого моляра нижней челюсти (при отсутствии знаковых зубов, описание исходит из расположения клыков верхней и нижней челюсти друг относительно друга). I тип характеризуется положением мезиобуккального бугорка первого моляра в передне-щечной фиссуре первого моляра нижней челюсти, II тип -мезибуккальный бугорок 1.6. находится кпереди от передне-щечной фиссуры первого моляра нижней челюсти, при III типе наблюдается дистальное положение передне-щечного бугорка первого моляра верхней челюсти относительно поперечной фиссуры нижнего моляра [2,6,7,28].…”

“…Пациенты с аномалиями прикуса II и III класса могут иметь стандартный/атипичный костный рисунок, протрузию или ретрузию одной из челюстей, несоответствие взаиморасположения зубных дуг верхней и нижней челюсти относительно друг друга, снижение жевательного коэффициента, что диктует индивидуализацию планирования лечения в каждом клиническом случае [6,7].…”