Evaluation of Smile Esthetics in Orthodontically Treated Patients With Bimaxillary-dentoalveolar Protrusion

Evaluation of Smile Esthetics in Orthodontically Treated Adult Female Patients With Bimaxillary-dentoalveolar Protrusion: A Retrospective Cohort Study

Evaluation of Smile Esthetics in Orthodontically Treated Adult Female Patients with Bimaxillary-dentoalveolar Protrusion.

A Retrospective Cohort Study.

Study Overview

• Status: Unknown
• Conditions: Bimaxillary Protrusion

• Study Type: Observational
• Enrollment (Anticipated): 19

Contacts and Locations

Study Locations

• Egypt
  • Cairo, Egypt
    • Asmaa Aboelnaga

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 24 years (Child, Adult)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: Female

• Sampling Method: Probability Sample

Study Population

Study models of orthodontically treated Egyptian adult female patients with bimaxillary dentoalveolar protrusion .

Description

The selected records should meet the following inclusion criteria:

Pre treatment:

1. Full permanent dentition
2. No dental nor any craniofacial anomalies
3. Molar Class I with bimaxillary-dentoalveolar protrusion
4. No excessive over jet or overbite

Treatment mechanics:

1. All patients treated with extraction of four 1st premolars
2. Retraction of anterior teeth using maximum anchorage mechanics

Post treatment:

1. Canine 1 relation
2. Molar I relation

Exclusion criteria :

Any orthodontic records without the previously mentioned pre and posttreatment inclusion criteria

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Gingival display	Amount of maxillary gingival exposure between inferior border of upper lip and marginal gingiva of maxillary central incisors.	Change from Baseline gingival display, at an average 24 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Lateral negative space	The buccal corridor between the posterior teeth and the corner of the mouth in smiling.	Change from Baseline lateral negative space, at an average 24 months
Smile arc	Relationship between a hypothetical curve drawn along The edges of the maxillary anterior teeth and the inner contour of the lower lip in the posed smile.	Change from Baseline smile arc, at an average 24 months
Lip line	The height of the upper lip relative to the maxillary central incisors.	Change from Baseline lip line, at an average 24 months
Smile width	The distance between the most medial points on the lips at the angles of the mouth (Left to right cheilion, CHR to CHL).	Change from Baseline smile width, at an average 24 months
Smile height	Distance from the most inferior point on the upper lip between the maxillary central inciors to the most superior point on the lower lip on a perpendicular vertical line from the upper point (upper stomion to lower stomion,UST to LST).	Change from Baseline smile height, at an average 24 months

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Anticipated): April 1, 2017
• Primary Completion (Anticipated): February 1, 2018
• Study Completion (Anticipated): March 1, 2018

Study Registration Dates

• First Submitted: February 25, 2017
• First Submitted That Met QC Criteria: March 3, 2017
• First Posted (Actual): March 8, 2017

Study Record Updates

• Last Update Posted (Actual): March 8, 2017
• Last Update Submitted That Met QC Criteria: March 3, 2017
• Last Verified: March 1, 2017

More Information

Terms related to this study

• Other Study ID Numbers: CEBC-CU-2017-02-08

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No