Effects of Orthognathic Surgery on Root Resorption and Soft Tissues

Gokhan Coban24 enrolled

Overview

The aim of this study is to evaluate the three-dimensional tomographic and photographic evaluation of the provision of two different orthognathic surgeries on hard and soft tissues with informative Class III deformity due to maxillary retrognathia and mandibular prognathia.

Patients who will undergo non-extraction surgery will be randomized as 'Pre-Surgery' (SEC) and 'Early Surgery' (EC). Maxillary advancement and mandibular recession will be calculated and a total of 24 patients, 12 in each group, will be included in the study. Millimetric (length, dehiscence, fenestration) and volumetric measurements and soft tissue anthropometric points will be measured in three-dimensional recordings taken at the beginning of treatment (T0) and after debonding (T1). Cone beam computed tomography (CBCT) images will be transferred to NNT and 'Mimics 18.0' programs for measurements. Three-dimensional photographs will be evaluated in the 3dMDvultus program. Shapiro-Wilk test will be used for normality, 'two independent samples t-test' and 'Mann Whitney U test' will be used for intra-group and inter-group comparisons.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Orthodontics Orthognathic Surgical Procedures

Interventions

Surgery FirstPROCEDURE

One month after surgery, patients were called for an appointment and lower and upper brackets were placed. Treatment was completed when right-left Class I canine and molar relationships and ideal overjet and overbite relationships were achieved.

Surgery EarlyPROCEDURE

The patients were directed to surgery with the upper and lower bonds applied at their first appointment and the brackets in their mouths. After surgery, treatment continued until the right-left Class I canine and molar relationship and the ideal overjet and overbite relationship were achieved.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * They must be over 18 years of age, * Skeletal Class III malocclusion and need double jaw orthognathic surgery, * Minimum crowding (patients with crowding between 0-3 mm), * Complete 3D records before surgery and at the end of treatment, * No decay on their teeth, * Good oral hygiene, * Healthy periodontal tissues. Exclusion Criteria: * History of trauma, * Congenital anomalies or craniofacial deformities * Congenital tooth loss (excluding wisdom teeth)

Locations (1)

Erciyes University Faculty of Dentistry Department of Orthodontics

Kayseri, Melikgazi, Turkey (Türkiye)

Outcomes

Primary Outcomes

Tooth length measurement (mm)

Root length of maxillary incisors will be measured using cone-beam computed tomography (CBCT). Data will be reported as mean change (± SD).

Time frame: up to 15 months

Tooth volume measurement (mm^3)

Root volume of maxillary incisors will be measured using cone-beam computed tomography (CBCT). Data will be reported as mean change (± SD).

Time frame: up to 15 months

Secondary Outcomes

Soft tissue measurement (3D)

Three-dimensional stereophotogrammetry will be used to assess changes in facial soft tissue profile, including convexity and lip-chin relationships. Results will be summarized as mean changes (± SD).

Time frame: up to 15 months

Data from ClinicalTrials.gov

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