Epidemiological Investigation of Malocclusion in China
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Epidemiological Investigation, Malocclusion. Basic parameters: 4 years — 20 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
A Comprehensive Epidemiological Investigation of Malocclusion in China
Overview
Malocclusion is a kind of craniomaxillofacial complex deformity caused by heredity, environment, bad habits, trauma, inflammation, tumor and aging. Notably, the last comprehensive national prevalence data on malocclusion in China, which encompassed a significant sample size, dates back over two decades. Given the evolving nature of these epidemiological metrics, such as prevalence rates, it is imperative to update our understanding. Consequently, there is an urgent need for China to undertake a unified, standardized epidemiological survey of malocclusion with a substantial sample size to ensure accurate and timely data collection.
Detailed description
With the improvement of our country's living and cultural level, orthodontic treatment for malocclusion has emerged as a critical need that significantly impacts individuals' physical and mental wellbeing, as well as their social life in contemporary society. To obtain the prevalence rate, demand index and risk factor analysis of malocclusion in China serves as a fundamental prerequisite for effective diagnosis, identifying the optimal treatment window, and devising tailored treatment plans.
The purpose of this study is as follows:
1. Obtaining epidemiological data such as the prevalence rate of malocclusion is the cornerstone of prevention and treatment of malocclusion, and is also the prerequisite of carrying out a series of studies; 2. Establishing China's orthodontic treatment demand index offers vital support for the advancement of orthodontics and oral healthcare.; 3. Updating and enhancing X-ray head image measurement normal reference value provides a more scientific and objective foundation for orthodontic planning, improves the level of diagnosis and treatment, and fosters the development of related disciplines.
The implementation of this project will not only foster an improvement in the overall oral health of the populace but also establish a scientific foundation for oral medicine research and the development of prevention and treatment strategies.
Primary outcome measures
- The Prevalence rate of malocclusion [Time frame: recruitment until December 2026]
Secondary outcome measures (2)
- Dental Aesthetic Index of each age group [Time frame: recruitment until December 2026]
- Index of Orthodontic Treatment Need of each age group [Time frame: recruitment until December 2026]
Eligibility criteria
Inclusion criteria
- Individuals with all genders;
- Individuals with good general health;
- Individuals with no history of orthodontic treatment or other maxillofacial surgical interventions;
- Individuals who agree to and are willing to sign the informed consent form.
Exclusion criteria
- Individuals diagnosed with genetic or systemic disorders;
- Individuals with a recent (within the past 3 months) history of maxillofacial trauma;
- Individuals who are incapable of undergoing oral examinations or completing the necessary questionnaires.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Cohort
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT06352385 · SH9H-2024-TK16-1.0