الفهرس 
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Abstract
Effect of asthma on dentoalveolar morphology and oral health unstudied enough and previous studies did not focus on asthmatic children in particular but examined attendant variables with asthma. Aim of this study: To evaluate clinically the effect of asthma on dentoalveolar morphology as change in dental arch width, dental arch length and palatal depth, and dental deformities as dental caries, gingivitis, and dental erosion. Materials and method: This study was conducted on 50 asthmatic children age range from 7-12 years from Allergy Clinical Immunology and Respiratory Unit (ACIRU), Children Hospital, Mansoura University, compared with 50 non-asthmatic children from the outpatient of the Pediatric Dentistry Department, Faculty of Dentistry, Mansoura University whose came for routine cheek up, by dental cast analysis. Modified electronic digital caliper was used to measure the Upper inter canine width (UICW), Lower inter canine width (LICW), Upper intermolar width (UIMW), Lower inter molar width (LIMW), Upper arch length (UAL),Lower arch length (LAL), and palatal depth (PD), and dental deformities examination for dft, DMFT, gingivitis, dental erosion. Results: In this study, asthmatic children showed high mean values in upper inter canine width, arch length, and palatal depth. Moreover lower inter canine width, inter molar width, and lower arch length, when compared with mean value of non-asthmatic children in both gender. While upper inter molar width of asthmatic children had less mean values when compared with mean value of non-asthmatic children as general, except when compared depend on gender. Asthmatic children had high mean values. The significance observed in upper inter molar width in male (p<0.00), and lower inter molar width (p<0.038), and lower inter molar width in male (p<0.04). On the other hand, asthmatic children had high mean values of dft, DMFT, gingivitis, dental erosion. Conclusion: Asthma effect on the normal dentoalveolar morphology especially in upper and lower inter molar width, and on the lower arch length in female children. Asthmatic children are more susceptible to caries, gingivitis and dental erosion than healthy children.