الفهرس 
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Abstract
The aim of the study was to evaluate the rate of accompanying gingival movement and changes in the WAG and WKG after orthodontic intrusion of maxillary incisors.
The current study was conducted on ten patients with an age range 16-19 years and deep overbite not less than 50%. Periodontal indices, the WAG and WKG were recorded before and after treatment. The gingival movement in relation to orthodontic intrusion was determined by radiopacity of a specially designed metal device indicating the position of the GM and MGJ on the lateral cephalometric radiographs immediately before and after four months of intrusion.
The data obtained was subjected to statistical analysis using Wilcoxon matched pairs signed ranks test: A non-parametric significant test used to compare paired, ordinal data results.
On basis of the results obtained from this study, it can be concluded
that:
1.Orthodontic intrusion has no negative effect on the gingiva as there was no significant difference in mean clinical attachment level and the increase in the mean periodontal probing depth was within healthy range.
2.The GM and MGJ moves in the same direction as the tooth, but at lower rate [90% & 85%] respectively.
3.There was no significant decrease in the width of attached and keratinized gingiva.
4.There was a significan decrease in the clinical crown length due to true incisor intrusion.