Evaluation of Mini and Macro-esthetics Following En- Masse Retraction Versus Two Step Retraction

Future University in Egypt

Status: Unknown

Conditions: Bimaxillary Protrusion

Treatments: Procedure: Two step Retraction; Procedure: En-masse retraction

Study type: Interventional

Funder types: Other

Identifiers

NCT05150665

FUE.REC(26)/12-2019

Details and patient eligibility

About

There's a scarcity in literature concerning mini-esthetics specially maxillary gingival display changes following en-masse retraction and two-step retraction. The purpose of this study is to determine, In orthodontic patients with maxillary protrusion, which technique of retraction will result in better esthetics upon smiling following en-masse retraction or two step retraction mechanics.

Full description

This study will be conducted in order to evaluate which technique of retraction will provide better outcome regarding mini and macro esthetics. In terms of mini esthetics, posed smiles will be analyzed to evaluate maxillary gingival display, as well as the analysis of smile arc, buccal corridor, inter-labial gap. In terms of macro esthetics, frontal and profile poses will be assessed to evaluate the nasolabial angle, mentolabial angle and upper and lower lip protrusion/ E- plane.

Enrollment: 30 patients

Sex: All

Ages: 16 to 24 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Adults and Adolescent patients (both genders)
• Age range (16-24)
• Patients with maxillary protrusion requiring first premolars extraction (Bimaxillary Protrusion or Class II division 1 cases).
• Patients with fully erupted permanent teeth (not necessarily including the third molar).
• Cases requiring maximum anchorage during retraction.
• Good general and oral health

Exclusion criteria

• Patients suffering from any neural disorders or systemic diseases interfering with tooth movement.
• Patients with soft tissue problems such as cleft-palate patients
• Patients with extracted or missing permanent teeth. (except for third molars).
• Patients with badly decayed teeth.
• Patients with any parafunctional habits (i.e. Bruxism, tongue thrusting, mouth breathing, etc....).
• Patients with previous orthodontic treatment.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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30 participants in 2 patient groups

En-Masse Retraction

Experimental group

Description:

Six anterior teeth (en-Masse) retracted using a crimpable hook distal to the upper lateral incisor and a power chain

Treatment:

Procedure: En-masse retraction

two step retraction

Experimental group

Description:

Six anterior teeth are retracted by two step technique by canine retraction followed by four anterior teeth retraction using a crimpable hook distal to the upper lateral incisor and a power chain

Treatment:

Procedure: Two step Retraction