unerupted การใช้

• The condition is frequently associated with one or more unerupted teeth.
• Another juvenile skull ( AMNH 24000 ) described by Sereno in 2012 also yielded unerupted replacement teeth.
• The unerupted teeth are triangular in lateral view, which is the typical tooth morphology in basal ornithischians.
• The type specimen BMNH M11414 an incomplete left mandible with symphysis, a deciduous premolar, and unerupted molars.
• The right permanent second premolar ( p2 ) is unerupted, but partially visible; it is a blade-shaped cutting tooth.
• Because the fetal pigs were still in the mother s uterus, teeth will still form which supports reasons for hollow unerupted teeth that may be seen.
• However, out of the 4 studies reviewed, this was the only study which favored more distalization with unerupted molars, as others did not agree.
• This new theory proposes firstly that areas of tension and compression are generated in the soft tissues surrounding unerupted teeth by the distribution of bite forces through the jaws.
• Unerupted replacement teeth in " Heterodontosaurus " were not discovered until 2011, when Norman and colleagues described the upper jaw of specimen SAM-PK-K1334.
• A research team led by molecular biologist Pamela C . Yelick of the Forsyth Institute in Boston removed unerupted molars from 6-month-old pigs and dissolved them with enzymes.
• |File : Cleidocranial dysplasia teeth . jpg | Panoramic view of the jaws showing multiple unerupted supernumerary teeth mimicking premolar, missing gonial angles and underdeveloped maxillary sinuses in cleidocranial dysplasia.
• Inherent in most of the theories outlined above, is the idea that a force is generated in the periodontal ligament beneath unerupted teeth, and that this force physically drives teeth out through the bone.
• Digital reconstructions of Ida's teeth reveal that she has unerupted molars in her jaw, indicating by comparison with modern squirrel monkeys that she was 9 10 months old and would have reached adulthood at 36 months.
• In addition to the developmental origin, some authors have suggested that periapical inflammation of non-vital deciduous teeth in proximity to the follicles of unerupted permanent successors may be a factor for triggering this type of cyst formation.
• Significantly, a recent finite element analysis study, analysing the distribution of force through the jaw of an 8 year old child, observed overall compression in the soft tissues above, and tension in the soft tissues below, unerupted teeth.
• This systematic review looked at four studies where one study stated that amount of distal movement of maxillary first molar was greater ( 3mm vs 2mm ) and that treatment time was shorter ( 5.2months vs 6 months ) in patients with unerupted second molar vs patients with erupted second molar.