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  • Electronic Resource  (3)
  • 1985-1989  (3)
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  • Electronic Resource  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Variations in the facial muscles at the angle of the mouth (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Clinical Anatomy 2 (1989), S. 129-134 
    Details
    ISSN: 0897-3806
    Keywords: human gross anatomy ; Life and Medical Sciences ; Miscellaneous Medical
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The Latin term modiolus literally means “the nave of a wheel” and in dentistry refers to the point lateral to the angle of the mouth where several facial muscles converge. It has been described as coinciding with a muscular or tendinous node in the cheek and is considered to be important clinically. The facial muscles that insert in the vicinity of the mouth angle are the levator anguli oris, zygomaticus major, risorius, buccinator, and depressor anguli oris. The arrangement of these muscles in relation to the angle of the mouth was studied in 147 cadavers (279 sides) of the Mongoloid (Japanese) and Caucasian races. Considerable variation in the pattern of convergence was found. The variations were classified into three types as follows. Type A: location of the muscle convergence was lateral to the angle of the mouth. Type B: convergent area was located above the angle. Type C: convergent area was located below the angle. When the two races were considered together type C occurred most frequently (42.3%) followed closely by type B (41.2%). The arrangement described in textbooks (type A) occurred least frequently (16.5%). The frequency of appearance of convergent types according to race also is given. The gross observations do not support the existence of a nodular modiolus. In addition, the muscles that are supposed to contribute to the nodule usually do not converge lateral to the mouth angle but rather converge either above or below the angle.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ca.980020302
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Morphology of the pterygomandibular raphe in human fetuses and adults (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 224 (1989), S. 117-122 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The pterygomandibular raphe as described in current anatomy textbooks is not supported by actual observations in cadavers. A study was made on 60 adult Caucasian and Negro cadavers (52 right and 58 left sides, giving a total of 110 sides) providing comparison with an earlier study on Japanese specimens. In addition, 50 fetuses (25 mm crown-rump length to term) were examined to determine the arrangement of the raphe prenatally. Variations in the morphology of the raphe region were classified into three types: Type A - only the upper portion of the raphe could be identified and had a broad, triangular shape. Type B - the buccinator and superior pharyngeal constrictor muscles were widely separated by a broad, fascial region. Type C - the raphe was absent with complete continuity of the buccinator and superior pharyngeal constrictor muscles. A prominent, narrow, tendinous band with attachments as described in current textbooks was never found in adults. There was a complete absence of the raphe in 36% of the specimens resulting in continuity of the buccinator and superior pharyngeal constrictor muscles (type C). However, the remaining adult specimens (64%) exhibited some form of a broad, fascial region that either completely (type B, 36%) or partially (type A, 28%) separated the two muscles. All of the fetuses exhibited the type B arrangement exclusively, indicating that changes in the shape of the raphe occur postnatally. The frequency of appearance of the raphe types in adults differs significantly according to race.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092240115
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Morphology of the mandibulo-stylohyoid ligament in human adults (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 222 (1988), S. 207-210 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The mandibulo-stylohyoid ligament is a consistently occurring connective tissue band or sheet that courses between the angle of the mandible and the stylohyoid ligament. Previously, in a few instances it has been variously named and described as a thickening of deep cervical fascia. Recently, Shimada et al. (1986) described the connective tissue thickening and named it the mandibulo-stylohyoid ligament because of its arrangement and attachments. In the present study the ligament was dissected in 99 adult cadavers (both white and black, 98 right sides, 95 left sides). It was present in all of the specimens examined and has been classified into three types according to refinements in its morphology. Type 1: The ligament was a thick, separate band that coursed from the region of the angle of the mandible to the stylohyoid ligament. Type 2: The ligament had the same attachments as Type 1 but was more extensive, being continuous with the stylomandibular ligament. Type 3: The ligament had the same attachments as Type 1 but was thin and less well developed. The Type 1 arrangement occurred 41% of the time, Type 2, 37% of the time, and Type 3, 22% of the time. The consistency and arrangement of the ligament suggests an important role of additional structural support in the region of the angle of the mandible and hyoid bone.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092220214
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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