Related Experiment Videos
A study of 1000 malocclusions selected by the HLD (CalMod) Index
1Medi-Cal Dental Services, Department of Health Services, State of California, USA. parkerws@aol.com
Summary
The HLD (CalMod) Index effectively identifies a broad spectrum of malocclusions in a large patient population. This field test confirms its utility in selecting diverse orthodontic cases for treatment.
Area of Science:
- Orthodontics
- Dental Public Health
Background:
- The HLD (CalMod) Index is a tool used in orthodontics to assess malocclusions.
- Previous validation of the index in large populations is limited.
Purpose of the Study:
- To evaluate the performance of the HLD (CalMod) Index in a large patient cohort.
- To determine the range of malocclusions selected by the index for treatment approval.
Main Methods:
- Retrospective analysis of 1000 patient study models previously approved for treatment.
- Remasurement and detailed study of each model to assess malocclusion characteristics.
- Categorization of patients by Angle classification, overjet, overbite, and other specific malocclusions.
Main Results:
- The HLD (CalMod) Index approved a wide range of malocclusions, including significant overjets (>9mm) in 26% of cases.
- Class I malocclusions were most prevalent (58%), followed by Class II (35%) and Class III (7%).
- Specific conditions like deep impinging overbites (12%) and anterior crossbites (4%) with tissue destruction were noted.
Conclusions:
- The HLD (CalMod) Index demonstrates robustness and applicability across a diverse array of malocclusions.
- The index successfully identifies complex cases, including those with severe overjets and specific bite discrepancies.
- This study validates the HLD (CalMod) Index as a comprehensive tool for orthodontic case selection in a large population.