Limits...
Masticatory muscle tendon-aponeurosis hyperplasia: A new clinical entity of limited mouth opening

View Article: PubMed Central - PubMed

ABSTRACT

Limited mouth opening is a common health problem that interferes with eating, makes examination of the oral cavity difficult, and may increase the mortality rate during emergency intubation. Here we introduce a disease designated as masticatory muscle tendon-aponeurosis hyperplasia, which is a new clinical condition of limited mouth opening. Most oral surgeons and dentists are still unaware of this disease condition, thus increasing the risk of incorrect diagnosis as some other disease, such as temporomandibular joint disorder. We will review the clinical features, epidemiology, pathophysiology, etiology, diagnosis, treatment, and prognosis of this disease and also appraise the literature available on the subject.

No MeSH data available.


Related in: MedlinePlus

Clinical characteristics of masticatory muscle tendon–aponeurosis hyperplasia (MMTAH). (A) Photograph of typical square mandibular shape. (B) Cephalometric radiograph of MMTAH showing small gonial angle. (C) Black dotted line displays cephalometric norm of adult Japanese females and black solid line displays typical MMTAH. Both mandibular plane (red solid line) and occlusal plane (blue solid line) in MMTAH tend to show flattening. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC5382786&req=5

fig0005: Clinical characteristics of masticatory muscle tendon–aponeurosis hyperplasia (MMTAH). (A) Photograph of typical square mandibular shape. (B) Cephalometric radiograph of MMTAH showing small gonial angle. (C) Black dotted line displays cephalometric norm of adult Japanese females and black solid line displays typical MMTAH. Both mandibular plane (red solid line) and occlusal plane (blue solid line) in MMTAH tend to show flattening. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

Mentions: A characteristic feature of this disease is a square mandible with a small gonial angle and flattening of the occlusal planes (Fig. 1A–C). We have previously proposed that MMTAH patients can be classified into three categories, based on analysis of cephalometric radiographs [10], as follows: for Type 1, both occlusal plane and mandibular plane exhibits counter-clockwise rotation; for Type 2, only mandibular plane exhibits counter-clockwise rotation; for Type 3, both occlusal plane and mandibular plane exhibits no rotation.


Masticatory muscle tendon-aponeurosis hyperplasia: A new clinical entity of limited mouth opening
Clinical characteristics of masticatory muscle tendon–aponeurosis hyperplasia (MMTAH). (A) Photograph of typical square mandibular shape. (B) Cephalometric radiograph of MMTAH showing small gonial angle. (C) Black dotted line displays cephalometric norm of adult Japanese females and black solid line displays typical MMTAH. Both mandibular plane (red solid line) and occlusal plane (blue solid line) in MMTAH tend to show flattening. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5382786&req=5

fig0005: Clinical characteristics of masticatory muscle tendon–aponeurosis hyperplasia (MMTAH). (A) Photograph of typical square mandibular shape. (B) Cephalometric radiograph of MMTAH showing small gonial angle. (C) Black dotted line displays cephalometric norm of adult Japanese females and black solid line displays typical MMTAH. Both mandibular plane (red solid line) and occlusal plane (blue solid line) in MMTAH tend to show flattening. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
Mentions: A characteristic feature of this disease is a square mandible with a small gonial angle and flattening of the occlusal planes (Fig. 1A–C). We have previously proposed that MMTAH patients can be classified into three categories, based on analysis of cephalometric radiographs [10], as follows: for Type 1, both occlusal plane and mandibular plane exhibits counter-clockwise rotation; for Type 2, only mandibular plane exhibits counter-clockwise rotation; for Type 3, both occlusal plane and mandibular plane exhibits no rotation.

View Article: PubMed Central - PubMed

ABSTRACT

Limited mouth opening is a common health problem that interferes with eating, makes examination of the oral cavity difficult, and may increase the mortality rate during emergency intubation. Here we introduce a disease designated as masticatory muscle tendon-aponeurosis hyperplasia, which is a new clinical condition of limited mouth opening. Most oral surgeons and dentists are still unaware of this disease condition, thus increasing the risk of incorrect diagnosis as some other disease, such as temporomandibular joint disorder. We will review the clinical features, epidemiology, pathophysiology, etiology, diagnosis, treatment, and prognosis of this disease and also appraise the literature available on the subject.

No MeSH data available.


Related in: MedlinePlus