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Phenotypes Associated with This Genotype
Genotype
MGI:3808005
Allelic
Composition
Enamtm1.1Jcch/Enamtm1.1Jcch
Genetic
Background
C57BL/6-Enamtm1.1Jcch
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Enamtm1.1Jcch mutation (1 available); any Enam mutation (71 available)
phenotype observed in females
phenotype observed in males
N normal phenotype

Tooth abnormalities in Enamtm1.1Jcch/Enam+ and Enamtm1.1Jcch/Enamtm1.1Jcch mice at 7 weeks of age

craniofacial
• some mice exhibit periodontal problems around the mandibular molars including bone loss, widened interdental spaces and bifurcated openings in relation to the roots of the first and sometimes second molar unlike in wild-type mice
• incisors are opaque, exhibit severe dentin abrasion and are coated in a thin layer of calcified material unlike in wild-type mice
• molars are coated in a thin layer of calcified material and show overt occlusal wear unlike in wild-type mice
• some molar crowns exhibit an accumulation of calcified material
• mineralized crowns are thinner and less dense than in wild-type mice
• beneath the cell, enamel surfaces are lumpy laterally more often than mesially unlike in wild-type mice
• mandibular crown mineralization at 2 weeks is reduced compared to in wild-type and heterozygous mice
• mice lack true enamel
• incisors exhibit severe dentin abrasion
• molars show overt occlusal wear unlike in wild-type mice

skeleton
• incisors are opaque, exhibit severe dentin abrasion and are coated in a thin layer of calcified material unlike in wild-type mice
• molars are coated in a thin layer of calcified material and show overt occlusal wear unlike in wild-type mice
• some molar crowns exhibit an accumulation of calcified material
• mineralized crowns are thinner and less dense than in wild-type mice
• beneath the cell, enamel surfaces are lumpy laterally more often than mesially unlike in wild-type mice
• mandibular crown mineralization at 2 weeks is reduced compared to in wild-type and heterozygous mice
• mice lack true enamel
• incisors exhibit severe dentin abrasion
• molars show overt occlusal wear unlike in wild-type mice

homeostasis/metabolism
N
• no abnormalities are observed in blood levels of calcium, phosphate, glucose, or alkaline phosphatase

growth/size/body
• some mice exhibit periodontal problems around the mandibular molars including bone loss, widened interdental spaces and bifurcated openings in relation to the roots of the first and sometimes second molar unlike in wild-type mice
• incisors are opaque, exhibit severe dentin abrasion and are coated in a thin layer of calcified material unlike in wild-type mice
• molars are coated in a thin layer of calcified material and show overt occlusal wear unlike in wild-type mice
• some molar crowns exhibit an accumulation of calcified material
• mineralized crowns are thinner and less dense than in wild-type mice
• beneath the cell, enamel surfaces are lumpy laterally more often than mesially unlike in wild-type mice
• mandibular crown mineralization at 2 weeks is reduced compared to in wild-type and heterozygous mice
• mice lack true enamel
• incisors exhibit severe dentin abrasion
• molars show overt occlusal wear unlike in wild-type mice


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory