Measurement of soft tissue profile changes as a result of placement of orthodontic brackets
Date
2008-03-12T10:19:46Z
Authors
Kebert, Michele
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Abstract
ABSTRACT
This research report quantifies the soft tissue profile changes that occur as a result of
the placement of orthodontic brackets. It also assesses whether patients are able to
perceive any changes in their own profiles immediately post bonding.
Using a standardised photographic technique, profile photographs were taken of a
group of patients both before and immediately after the placement of orthodontic
brackets. A series of angular and linear measurements were made each on the
photographic images using a computer software program. The data obtained from the
‘before’ and ‘after’ photographs were then compared.
Patients were also asked several standard questions about their ‘before’ and ‘after’
photographs.
The results indicate that the placement of orthodontic brackets can cause changes in
the soft tissue profile of patients. Statistically significant changes were found for four
of the ten profile measurements that were investigated, namely the Nasolabial Angle,
the Maxillo-Mandibular Contour, the Interlabial Angle and the Lower Lip Projection.
It was also found that patients are able to perceive changes in their profiles brought
about by the placement of orthodontic brackets, and that most are able to correctly
recognise which photograph was taken after bracket placement. The majority of
patients prefer the photographs of their profiles taken before bracket placement.
This study was conducted using a standardised orthodontic bracket. Future research
may be carried out to compare profile changes occurring with other bracket systems.
This may assist manufacturers in designing brackets that are more comfortable and
acceptable for patients.
Description
Keywords
measurement, soft tissue profile, orthodontic brackets