نتایج جستجو برای: mandible modeling

تعداد نتایج: 401300  

2017
Alexander Tsouknidas Lucia Jimenez-Rojo Evangelos Karatsis Nikolaos Michailidis Thimios A. Mitsiadis

Mice are arguably the dominant model organisms for studies investigating the effect of genetic traits on the pathways to mammalian skull and teeth development, thus being integral in exploring craniofacial and dental evolution. The aim of this study is to analyse the functional significance of masticatory loads on the mouse mandible and identify critical stress accumulations that could trigger ...

2014
Tamar Brosh Bereznyak-Elias Yekaterina Raphael Pilo Nir Shpack Silvia Geron

OBJECTIVES Orthodontic mini implants can be inserted at the interradicular site. The bone quality at this site may affect the stability and anchorage of the implant. Bone density is clinically evaluated by Hounsfield units (HU) obtained from cone beam CT (CBCT). The objective of this study was to determine the correlations between HU, microhardness and cortical bone thickness of interradicular ...

2012
R. Citarella

Mathematical modelling of human mandible and its temporomandibular joints (TMJs) is one of the most important steps for developing a powerful forecasting tool to analyse the stress/strain behaviour of a human masticatory system under occlusal loads. In this work the structural behaviour of a mandible with articular discs, undergoing a unilateral occlusion, is numerically analysed by means of bo...

2013
Rishi Pokhrel Rajan Bhatnagar

The mandible is the strongest bone of the skull, and it is commonly utilized in forensic anthropology for determination of sex from skeletal remains. It has been extensively studied by both metric and non-metric methods, but for this purpose an intact mandible is often required. This study was conducted in Indian population using discriminant function analysis to calculate the accuracy of two p...

Journal: :Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology 2002
D Rotten J M Levaillant H Martinez H Ducou le Pointe E Vicaut

OBJECTIVE To define parameters that enable the objective diagnosis of anomalies of the position and/or size of the fetal mandible in utero. DESIGN Fetuses at 18-28 gestational weeks were examined by two- and three-dimensional ultrasound. The study included normal fetuses and fetuses with syndromes associated with known mandible pathology: Pierre Robin sequence or complex (n = 8); hemifacial m...

Journal: : 2022

Odontomas are the most common tumor-like (hamartoma) odontogenic lesions in gnathic bones. There two main types: complex odontoma which is composed mainly of amorphous calcification, and compound characterized by irregular tooth-like structures. generally asymptomatic cases involve only one quadrant maxilla or mandible. The treatment choice surgical removal. aim present study to report a rare c...

Journal: :Journal of Biosciences and Medicines 2021

In recent times, research into mandibular fracture has gained momentum from advances in scanning techniques, software/algorithm developments and improvements, numerical structural modeling using the finite-element method (FEM). this work, FEM is used to model a (using an inhomogeneous orthotropic jaw model) simulating effect of different bite tasks/forces on stability fixated fracture. Specific...

2017
Na-Ri Kim Soo-Byung Park Jihyun Lee Youn-Kyung Choi Sang Min Shin Yong-Seok Choi Yong-Il Kim

BACKGROUND This study constructed a partial-least-square path-modeling (PLS-PM) model and found the pathway by which the postsurgical vertical dimension (VD) affects the extent of the final mandibular setback on the B point at the posttreatment stage for the skeletal class III surgery-first approach (SFA). METHODS This study re-analyzed the data from the retrospective study by Lee et al. on 4...

2014
P. Premanand

Aim: This study is to evaluate the pattern of stress distribution and bone failure around the Absoanchor micro-implant under various loading conditions and various force levels. Materials and Methods: FESA was originally introduced as a numerical form of analysis in aeronautical engineering and has the potential to obtain a computer generated mathematic model of a real object of complicated sha...

Journal: :Archives of oral biology 2014
José Antonio Alarcón Markus Bastir Ignacio García-Espona Mario Menéndez-Núñez Antonio Rosas

OBJECTIVES This study aimed at clarifying the morphological interactions among the cranial base, face, and mandible, to improve the assessment and treatment of skeletal malocclusions involving the mandible. DESIGN Untreated adult subjects (n=187) were grouped according to standard cephalometric criteria of vertical and sagittal relationships. Geometric morphometrics were used to test the null...

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