In orthodontics, the malalignment of teeth could be measured using many types of indexes. The Peer Assessment Rating (PAR) Index is one of the most common indexes in Orthodontics which has a 98% validity, especially from the occlusal surface. Many researchers use a PAR ruler to measure the PAR Index manually. The aim of this study is to compare the duration between the manual and digital measurement of PAR index in a system based on the 2-dimensional (2D) image. Materials & methods: The 110 dental casts in octagonal base form pre-orthodontic treatment were scanned to get the digital image data. Eleven components of PAR index of 110 dental casts in octagonal base form pre-orthodontic treatment were calculated manually and digitally. Both of duration were compared with the paired t-test. Result: The time consuming of manual measurement was 378.01 seconds and digital was 177.05 seconds. The paired t-test comparing to systems were significant (p=0.001). The average difference of 3 PAR index scores in assessing the same study model, that shows Digital is more thorough at 3 PAR parity score. Discussion: The paired T-test has been performed to the 11 PAR index component. A digital measurement of 11 PAR component is reliable and faster than using a measurement manually by model studies. The 2D image is clearer so that point determination is easier hence the measurement time is faster. Conclusions: It is a solution and recommended for the orthodontist to consider of using PARIndex system as one of the alternative tools to have a faster PAR index measurement.
|Number of pages||4|
|Journal||Journal of International Dental and Medical Research|
|Publication status||Published - 1 Jan 2017|
- Digital measurement
- PAR index system