Clinical Evaluation of Efficacy of CIA and CNA Intrusion Arches
Background and Objectives: Excessive overbite is one of the most common problems that confront the orthodontist. Deep bite can be due to infraocclusion of posterior teeth, supraocclusion of anterior teeth or a combination of the two. Correction of same can be carried out by extrusion of molars,...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
JCDR Research and Publications Private Limited
2015-09-01
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Series: | Journal of Clinical and Diagnostic Research |
Subjects: | |
Online Access: | https://jcdr.net/articles/PDF/6465/11878_CE(Ra1)_F(GH)_PF1(PAK)_PFA(AK)_PF2(PAG).pdf |
Summary: | Background and Objectives: Excessive overbite is one of
the most common problems that confront the orthodontist.
Deep bite can be due to infraocclusion of posterior teeth,
supraocclusion of anterior teeth or a combination of the two.
Correction of same can be carried out by extrusion of molars,
intrusion of incisors or by a combination of both respectively.
Various intrusion arches are recommended for correcting deep
bite by true intrusion of anterior teeth, Utility arches, Segmental
arch, Connecticut Intrusion Arch (CIA) and Connecticut New
Arch (CNA). The purpose of this study was to evaluate clinical
efficacy of CIA and CNA intrusion arches.
Materials and Methods: Tracings recorded from pre and
post-treatment lateral cephalograms of 25 patients treated by
CIA (Group I) and another 25 patients treated by CNA (Group
II) intrusion arches in deep bite cases after four months of
treatment were analysed and findings were recorded.
Statistical Analysis: Paired t-test was used to compare pre
and post-treatment changes within Groups I and II and unpaired
t-test was used to compare treatment changes between Group
I and Group II. A P-value of < 0.05 was set for statistical
significance.
Results: Findings of this study demonstrate that an average
of 1mm of intrusion takes place with CIA intrusion arch and
1.3mm with CNA intrusion arch in a period of 4 months. Both
intrusion arches do not affect the position of molar in vertical or
anteroposterior plane.
Interpretation & Conclusion: Both CIA and CNA intrusion
arches are effective in bringing about intrusion of lower
incisors. |
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ISSN: | 2249-782X 0973-709X |