Angle Class I
Conditions
Keywords
Non-extraction, orthodontics treatment, Angle class I malocclusion
Brief summary
Introduction: The investigators aimed to evaluate the effectiveness of non-extraction orthodontic treatment for Angle class I malocclusion.
Detailed description
Many people are also concerned about their oral health. When social communication is more important, aesthetic concerns also receive a lot of attention. A beautiful smile can boost self-assurance and empathy. Angle class I malocclusion is prevalent, and dental malocclusion is a significant percentage of the population at all ages . Tooth extraction is a controversial topic in orthodontics, with the general view being against it. Angle and his students argued against it, but Charles Tweed saw recurrence in the 1930s after retreatment without extraction and retreatment with extraction. The use of tooth extraction therapy increased in the 1960s but has become less common since the late 20th century. The science of orthodontics has made significant advancements under the principle of least invasiveness, but the debate remains about whether to consider tooth extraction. The contemporary view believes that the majority of patients may and should be treated without tooth extraction, but in rare circumstances, extraction is necessary to make up for crowding and excessive incisor protrusion that harm the beauty. In truth, each individual must be thoroughly evaluated in light of their bite, cosmetic condition, and stability in the wake of therapy before any course of action is recommended. The investigators aimed to evaluate the effectiveness of non-extraction orthodontic treatment for Angle class I malocclusion.
Interventions
OTHERNon-extraction Orthodontic Treatment of Angle Class I Malocclusion
Cephalometric radiographs, and extraoral and intraoral photographs, and cast impressions were collected before and after intervention. The weighted PAR Index (Peer Assessment Rating) employed to determine outcome of orthodontic treatment. Also the following soft tissue and bone indexes were assessed before and after intervention
Sponsors
Can Tho University of Medicine and Pharmacy
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Intervention model description
Cephalometric radiographs, and extraoral and intraoral photographs, and cast impressions were collected before and after intervention. The weighted PAR Index (Peer Assessment Rating) employed to determine outcome of orthodontic treatment. Also the following soft tissue and bone indexes were assessed before and after intervention, SNA, SNB, ANB, SN\_GoGn, SN\_Occplane, U1\_NAmm, U1\_NA, L1\_NBmm, L1\_NB, U1\_L1, U1\_Mp, Ls\_E, Li\_E, and Nasolabial\_angle. Intervention was MBT (MBT System, 3M Unitek, USA) non-extraction fixed orthodontic treatment. One experienced researcher analyzed and interpreted all of the cephalometric images used in the study using the WedCeph (https://webceph.com/). Data were analyzed by linear regression and T-Test statistical test using R software version 4.3.0 (R Foundation for Statistical Computing, Vienna, Austria) by a blinded statistician.
Eligibility
Sex/Gender
ALL
Age
15 Years to 25 Years
Healthy volunteers
Yes
Inclusion criteria
* Patients (≥ 15 years) with indicated Angle class I malocclusion and missing space ≤9mm * Cervical vertebral maturation stages 5, 6, (CS5, CS6): cervical vertebrae 2, 3, and 4 have a concave curved lower border and have at least one rectangle C3, C4 cervical vertebra upright or at least square * No prior orthodontic treatment * Fully erupted permanent teeth (except third molars) * Voluntary research participation
Exclusion criteria
Face soft tissue surgical procedures, periodontal disease, and maxillofacial congenital anomalies
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| We aimed to evaluate the effectiveness of non-extraction orthodontic treatment for Angle class I malocclusion. | Cephalometric radiographs, and extraoral and intraoral photographs, cast impressions and PAR Index (Peer Assessment Rating) were collected before and after intervention through study completion, an average of 2 years | Cephalometric radiographs, and extraoral and intraoral photographs, and cast impressions were collected before and after intervention. The weighted PAR Index (Peer Assessment Rating) employed to determine outcome of orthodontic treatment |
Countries
Vietnam
Outcome results
None listed