The posterior crossbite is a common type of malocclusion that might affect the normal growth pattern. Early treatment is recommended by rapid maxillary expansion with different appliances. This line of treatment needs a sufficient retention period to decrease the rate of relapse. The low level laser therapy has been used to enhance tissue regeneration. This study aims to compare the effect of rapid maxillary expansion with low level laser versus rapid maxillary expansion in children with posterior cross bite malocclusions.
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Inter-jugale width
Timeframe: six months of retention
Buccal maxillary width
Timeframe: six months of retention
Bone density of the mid-palatal suture
Timeframe: six months of retention