The Correlation between Inclination and the Thickness of Maxillary Central Incisors at Orthodontic Clinic of RSGM FKG USU (Research Report)

DOI

10.2991/idcsu-17.2018.53How to use a DOI?

Keywords

Central maxillary incisors inclination, alveolar bone thickness, lateral cephalometry, fenestration

Abstract

In an orthodontic treatment, the labio-lingual movement of the anterior teeth is required to improve the sagittal relationship of the maxillary and mandibular arch in order to achieve a more harmonious profile. However, excessive force to the teeth movement could lead to iatrogenic effect, therefore an evaluation of tooth supporting tissue is essential prior to treatment. The purpose of this research is to understand the relationship between inclination and the thickness of the alveolar bone of the maxillary central incisors. The total sample in this research is 135 lateral cephalograms, divided into three groups: normal inclination, proclination and retroclination respectively. The labio-lingual inclination of the central incisors is determined based on the angle of central maxillary incisor towards Sella-Nasion (SN Plane). The labial and lingual thickness of the alveolar bone is determined by a line drawn perpendicular to the axis of the tooth, measured in linear on each 1/10 level along the root of teeth, from cement-enamel junction until the root of apical the central maxillary incisor. Kruska-Wallis test is used to determine the relationship between the inclination and the alveolar bone thickness of central maxillary incisors. There is a significant difference between the thickness of the labial and lingual alveolar bone with the inclination (p < 0.005). There is a significant relationship between the inclination of the alveolar bone thickness with labial and lingual root apical teeth on central maxillary incisive. The retroclined central maxillary teeth tend to have thinner labial alveolar bone support especially in root area and must be taken into consideration. The prevalence of fenestration in retroclined is higher than normal group and there was no fenestration in proclined group.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Nurhayati
AU  - Amalia Oeripto
PY  - 2018/02
DA  - 2018/02
TI  - The Correlation between Inclination and the Thickness of Maxillary Central Incisors at Orthodontic Clinic of RSGM FKG USU (Research Report)
BT  - Proceedings of the International Dental Conference of Sumatera Utara 2017 (IDCSU 2017)
PB  - Atlantis Press
SP  - 204
EP  - 207
SN  - 2468-5739
UR  - https://doi.org/10.2991/idcsu-17.2018.53
DO  - 10.2991/idcsu-17.2018.53
ID  - 2018/02
ER  -