Journal: Drug Invention Today

Article Id: JPRS-P col-00003140
Title: Effect of premolar extractions on vertical dimension in borderline extraction case - A retrospective study
Category: Pharmaceutics
Section: Research Article
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    Aim: Aim of this study is to investigate the short-term effects of systematic premolar extraction in borderline cases for extraction therapy on vertical dimension. Materials and Methods: Inclusion criteria: Overjet of 6–9 mm and crowding of >6 mm 50 had first premolars extracted, 50 were non-extraction patients. Patient selection by multivariate cluster analysis ensured homogeneity at baseline regarding dentoskeletal parameters. Parameter changes were determined with the models and compared between the extraction and non-extraction group. Results: The systematic extraction of premolars in borderline patients with a distinct sagittal overjet and crowding did not significantly influence vertical dimension. Discussion: We found that the vertical overbite increased slightly in the extraction patients while decreasing in the non-extraction patients. This group difference was also reported by Kinzinger et al. but could not be statistically validated in our study. Most studies on the contrary report a significant decrease of vertical overbite after premolar extraction. In most of these cases, however, the patients had an increased overbite at the beginning of treatment. Conclusions: The influence of premolar extractions on vertical dimension is often overestimated, since only slight changes in are to be expected. In integrated treatment planning, the extraction decision should not be primarily based on concerns about the aggravation of vertical dimension.

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    Author(s) Name:

    Swetha Sridharan, S. Aravind Kumar*

    Affiliation(s) Name:

    Department of Orthodontics, Saveetha Dental College, Saveetha University, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India

    *Corresponding author: Dr. S. Aravind Kumar, Department of Orthodontics, Saveetha Dental College, Saveetha University, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India.

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    Author:

    Swetha Sridharan, S. Aravind Kumar*

    Title:Effect of premolar extractions on vertical dimension in borderline extraction case - A retrospective study
    Journal:Drug Invention Today
    Vol(issue):11 (February)
    Year:2019
    Page No: (369-372)
  • Experimental Methods Keywords

    Methodology: A retrospective study
    Research Materials:50 non-extraction patients

Keywords

Borderline extraction Integrated treatment Premolar Systematic extraction

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