[Oradlist] Use of Panoramic X-Ray to Determine Position of Impacted Maxillary Canines.
asma.alekrish at gmail.com
Tue Apr 20 15:15:11 PDT 2010
The question arises: How much detailed info do orthodontists need regarding
the relationship of an impacted canine to the adjacent teeth. Is it
sufficient for them to know whether the tooth is buccal or lingual to the
adjacent teeth, along with the vertical angle of impaction? Or does
additional information obtained by 3-D imaging (such as the distance between
the impacted tooth and adjacent teeth and the horizontal angle of impaction)
improve the diagnostic and therapeutic outcome for orthodontic patients? We
will need the input of orthodontists in this matter.
On Wed, Apr 21, 2010 at 12:02 AM, Allan Abuabara
<allan.abuabara at gmail.com>wrote:
> Hello All,
> I read this recent and interesting manuscript and I want to share with you
> Best regards.
> Allan Abuabara.
> J Oral Maxillofac Surg. 2010 Feb 4. [Epub ahead of print]
> Use of Panoramic X-Ray to Determine Position of Impacted Maxillary Canines.
> Katsnelson A<http://www.ncbi.nlm.nih.gov/pubmed?term=%22Katsnelson%20A%22%5BAuthor%5D>,
> Flick WG<http://www.ncbi.nlm.nih.gov/pubmed?term=%22Flick%20WG%22%5BAuthor%5D>,
> Susarla S<http://www.ncbi.nlm.nih.gov/pubmed?term=%22Susarla%20S%22%5BAuthor%5D>,
> Tartakovsky JV<http://www.ncbi.nlm.nih.gov/pubmed?term=%22Tartakovsky%20JV%22%5BAuthor%5D>,
> Miloro M<http://www.ncbi.nlm.nih.gov/pubmed?term=%22Miloro%20M%22%5BAuthor%5D>
> Resident, Department of Oral and Maxillofacial Surgery, Massachusetts
> General Hospital, Boston, MA.
> PURPOSE: To evaluate the position of impacted maxillary canines in the
> alveolus using panoramic radiographs. MATERIALS AND METHODS: The present
> study was a retrospective chart review of 102 patients with 130 impacted
> maxillary canines from the University of Illinois at Chicago College of
> Dentistry and private practice. Of the 130 impacted maxillary canines, 59
> were impacted buccally and 71 were impacted palatally. The inclination of
> the impacted maxillary canines to a horizontal line from the mesiobuccal
> cusps of the maxillary molars was measured. We used these measurements to
> predict the position of the tooth and correlate this prediction with the
> actual approach used during surgery. RESULTS: The mean angulation of the
> buccally impacted maxillary canines was 75.1 degrees +/- 18.2 degrees
> (range, 8 degrees to 111 degrees ). The mean angulation of the palatally
> impacted maxillary canines was 51.3 degrees +/- 15.3 degrees (range, 12
> degrees to 91 degrees ). The mean difference between the angulation of the
> impacted maxillary canines as measured on the panoramic radiographs was
> statistically significant (P < .001). >From a receiver-operator
> characteristic curve and using a logistic regression model, impactions
> greater than 65 degrees were 26.6 times more likely to be buccally impacted
> maxillary canines (P < .001). CONCLUSIONS: Panoramic radiographs are useful
> for predicting the location of impacted maxillary canines and the subsequent
> surgical approach required for exposure and orthodontic appliance attachment
> when computed tomography is unavailable or unnecessary otherwise. The use of
> panoramic radiographs for determing impacted maxillary canine position has a
> high sensitivity and specificity, with angulations greater than 65 degrees
> associated with buccal impactions. Copyright © 2010 American Association
> of Oral and Maxillofacial Surgeons. All rights reserved.
> Oradlist mailing list
> Oradlist at lists.ucla.edu
Asma'a Al-Ekrish, MDS
King Saud University
Riyadh, Saudi Arabia
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Oradlist