Clinical effect of removable lingual arch plus auxiliary spring for dental arch expansion / 南方医科大学学报
Journal of Southern Medical University
;
(12): 546-547, 2007.
Article
in Chinese
| WPRIM
| ID: wpr-268079
ABSTRACT
<p><b>OBJECTIVE</b>Observe the clinical effect of removable lingual arch plus auxiliary spring for convenient dental (especially mandibular) arch expansion.</p><p><b>METHODS</b>Seventeen patients with dental arch constriction complicated by mild dental crowding were enrolled in this study, including 9 requiring maxillary arch expansion and 8 necessitating mandibular expansion. The patients were divided to two groups at random for arch expansion with removable lingual arch plus auxiliary spring and with Quad-helix, respectively, and the effect of arch expansion was compared between the two groups.</p><p><b>RESULTS</b>After 8 weeks of arch expansion, the average width of U4-U4 and U5-U5 in removable lingual arch group was enlarged by 2.2 mm and 3.0 mm, and that in Quad-helix group by 2.3 mm and 3.5 mm, respectively, showing no significant differences between the two groups (P>0.05). After 12 weeks of treatment, the average width of L4-L4 and L5-L5 in the former group was enlarged by 2.3 mm and 2.5 mm, respectively, significantly greater than that in the latter group (1.0 mm and 1.2 mm, P<0.05).</p><p><b>CONCLUSION</b>Removable lingual arch plus auxiliary spring allows significant expansion of the middle segment of the dental arch (bicuspids), and can be more effective than Quad-helix for mandibular arch expansion.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Orthodontic Appliances, Removable
/
Orthodontics, Corrective
/
Pathology
/
Therapeutics
/
Palatal Expansion Technique
/
Dental Arch
/
Malocclusion
/
Methods
Limits:
Adolescent
/
Child
/
Humans
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2007
Type:
Article
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