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A Comparison of Soft Tissue Profiles Morphed by Orthodontists and by a Soft Tissue Arc

Thompson, Andrew (2011) A Comparison of Soft Tissue Profiles Morphed by Orthodontists and by a Soft Tissue Arc. Master's Thesis, University of Pittsburgh.

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    Abstract

    There are many orthodontic cephalometric analyses available. The emphasis in treatment planning has traditionally been hard tissue focused. This study evaluates a Soft Tissue Arc used in treatment planning. 30 profile images were morphed by 5 orthodontic residents and 5 orthodontic faculty. No statistically significant difference was observed between the morphing of the orthodontic faculty and residents. These same images were changed to match ideal values from a Soft Tissue Arc drawn from nasion with the center at center "O". The Soft Tissue Arc changed the pictures differently than the orthodontic experts, however, there was no statistical difference in the final placement of soft tissue pogonion. These pairs of images (expert morphing vs Soft Tissue Arc changes) were then rated as more attractive or less attractive on a visual analogue scale by 5 orthodontic residents, 5 dental school faculty and 5 laypersons. Across the board, the images morphed by the experts received better ratings than the images changed by the Soft Tissue Arc. Laypersons were considerably less critical in their judgments, and overall gave higher ratings.


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    Item Type: University of Pittsburgh ETD
    ETD Committee:
    ETD Committee TypeCommittee MemberEmailORCID
    Committee ChairRobison, Janetjmr24@pitt.edu
    Committee MemberClose, Johnjmc10@pitt.edu
    Committee MemberShok, Paulpes10@pitt.edu
    Title: A Comparison of Soft Tissue Profiles Morphed by Orthodontists and by a Soft Tissue Arc
    Status: Unpublished
    Abstract: There are many orthodontic cephalometric analyses available. The emphasis in treatment planning has traditionally been hard tissue focused. This study evaluates a Soft Tissue Arc used in treatment planning. 30 profile images were morphed by 5 orthodontic residents and 5 orthodontic faculty. No statistically significant difference was observed between the morphing of the orthodontic faculty and residents. These same images were changed to match ideal values from a Soft Tissue Arc drawn from nasion with the center at center "O". The Soft Tissue Arc changed the pictures differently than the orthodontic experts, however, there was no statistical difference in the final placement of soft tissue pogonion. These pairs of images (expert morphing vs Soft Tissue Arc changes) were then rated as more attractive or less attractive on a visual analogue scale by 5 orthodontic residents, 5 dental school faculty and 5 laypersons. Across the board, the images morphed by the experts received better ratings than the images changed by the Soft Tissue Arc. Laypersons were considerably less critical in their judgments, and overall gave higher ratings.
    Date: 16 June 2011
    Date Type: Completion
    Defense Date: 27 April 2011
    Approval Date: 16 June 2011
    Submission Date: 17 May 2011
    Access Restriction: No restriction; The work is available for access worldwide immediately.
    Patent pending: No
    Institution: University of Pittsburgh
    Thesis Type: Master's Thesis
    Refereed: Yes
    Degree: MDS - Master of Dental Science
    URN: etd-05172011-210941
    Uncontrolled Keywords: soft tissue arc; soft tissue profile
    Schools and Programs: School of Dental Medicine > Dental Science
    Date Deposited: 10 Nov 2011 14:45
    Last Modified: 12 Jun 2012 15:40
    Other ID: http://etd.library.pitt.edu/ETD/available/etd-05172011-210941/, etd-05172011-210941

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