Uploaded byAlaa Qari
DMFT Index
The document discusses the DMF Teeth Indices used for assessing coronal caries. It defines the DMFT index as the sum of decayed, missing due to caries, and filled permanent teeth. It provides detailed criteria for classifying a tooth as decayed, missing, or filled based on the presence of cavitation, undermined enamel, softness, and other factors. Rules for recording DMFT are also outlined, such as only counting each tooth once and excluding primary teeth, unerupted teeth, and those missing due to trauma. Calculating DMFT involves summing the scores for individual patients and populations.
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DMFT Index
- 1. DMF Teeth Indicesfor Coronal Caries Assessment Dr. Alaa Husni Qari. BDS., CAGS., DScD. January 24th, 2021 Public Health I Umm Al Qura University College of Dentistry Division of Dental Public Health, Department of Preventive Dentistry
- 2. Objectives DMFT INDEX CARIESDETECTION CRITERIA FOR CALCULATION OF DMFT
- 3. The Decayed, Missing,Filled Tooth (DMFT) index Permanent Teeth DMFT index is applied to teeth Definition • DMFT is the sum of the number of Decayed, Missing due to caries, and Filled Teeth in the permanent teeth. https://www.who.int/data/gho/indicator-metadata-registry/imr-details/3812 https://www.dentalcare.com/en-us/professional-education/ce-courses/ce368/epidemiology-the-dmf-index
- 4. D component Describes the“Decayed” teeth that include the followings: • Carious tooth • Filled tooth with recurrent decay. • Only the roots are left • Defect filling with caries • Temporary filling • Tooth has both carious lesion(s) and a filling https://youtu.be/lYYx9vQXHKE
- 5. The Identification Criteria ofDental Caries - WHO • The Lesion is clinically visible and obvious (cavitation) Image source: Wikipedia https://youtu.be/lYYx9vQXHKE
- 6. The Identification Criteria ofDental Caries - WHO • Undermined enamel: discoloration or loss of translucency • The explorer tip catches or resists removal after moderate to firm pressure on insertion in discolored pits and fissures. Also, when there is there is softness at the base http://www.myshared.ru/slide/1344392/ https://youtu.be/lYYx9vQXHKE Mouth Mirror Explorer
- 7. M Component Describes “Missingteeth due to caries” Extracted/ removed teeth for reasons other than caries should be excluded (Not Counted) such as the followings: • Orthodontic treatment • Impaction • Periodontal disease https://www.dentalcare.com/en-us/professional-education/ce-courses/ce368/epidemiology-the-dmf-index https://youtu.be/lYYx9vQXHKE
- 8. F Component Describes thefollowing points: • Filled teeth due to caries • permanent filling • There was no secondary (recurrent) caries or other area of the tooth with primary caries. • Un-defected fillings • Tooth with a crown placed because of a previous decay https://www.dentalcare.com/en-us/professional-education/ce-courses/ce368/epidemiology-the-dmf-index https://youtu.be/lYYx9vQXHKE
- 9. Teeth restored forother reasons than dental caries should be excluded such as the followings: • Trauma (fracture) • Hypoplasia (cosmetic purposes) • Bridge abutment (retention) • Preventive fillings and fissure sealants https://youtu.be/lYYx9vQXHKE Teeth Not Counted
- 10. Rules in Recording DMFT • Notooth must be counted more than once, either decayed (D), missing (M),or Filled (F) teeth. • Decayed, missed and filled teeth should be recorded separately. • Tooth may have several fillings on different surfaces should be counted only once as filled tooth F. • Tooth might have a filling in one surface and a decay in another, it should be counted as decayed D. https://youtu.be/lYYx9vQXHKE
- 11. Rules in Recording DMFT • Secondarycaries under the filling should be recorded as decayed D. • Deciduous (primary) teeth should not be counted. • Count the erupted teeth (cusp tip or incisal edge is exposed) • Count the tooth as present even though the crown has been destroyed and only the roots are left Courtesy to Dr. Afnan Nassar https://youtu.be/lYYx9vQXHKE
- 12. Rules in Recording DMFT Exclude thefollowings: • Congenitally missing • Supernumerary teeth • Primary teeth retained in the permanent dentition. • Unerupted teeth • Avulsion teeth due to trauma or accident https://youtu.be/lYYx9vQXHKE
- 13. Recording DMFT Check only thefirst 2 minutes for recording the DMFT https://youtu.be/o5NcrgLinQ8
- 14. Calculating DMFT 1. For Individual(DMFT= DT + MT + FT) https://youtu.be/lYYx9vQXHKE Scores range: 0 -28 or 0-32 (3rd molars included)
- 15. Calculating DMFT 1. For Population TotalDMFT for the group https://youtu.be/lYYx9vQXHKE Total no. of individuals examined Mobile Dental Clinics of Umm Al-Qura University College of Dentistry
- 16. Thank you! Please contactme for any questions ahqari@uqu.edu.sa