IADR Abstract Archives
Validation of a New Feasible Approach for Sleep Bruxism Diagnosis
Objectives: A new diagnostic method for quantification of sleep bruxism (SB) activity has been developed, aiming to combine good validity parameters with a convenient handling. The purpose of the present double-blind controlled-clinical trial was to verify the new method by using the current gold standard as a benchmark in an appropriate sample size and to quantify the subjective handling properties.
Methods: Overall 45 subjects (10 SB and 35 non-SB subjects) participated in this investigation. For SB diagnosis, each participant received a two-night ambulatory polysomnographic recording (PSG) including audio-video recordings. The new diagnostic method consists of a 0.5 mm narrow diagnostic plate (DIABRUX) that was manufactured in a vacuum-press similar to a hard plate. After identification of SB and non SB subjects, each subject had to wear the DIABRUX for five consecutive nights and the occurring abrasion on the surface was automatically calculated by a specifically for this purpose developed software in pixels thus resulting in a sum score, viz. the pixel score.
Results: The comparison between the SB and non-SB group estimated a mean pixel score of 1,306.25 (SD 913.22) for the SB group and a mean pixel score of 380.65 (SD 483.29) for the non-SB group (3.4 times higher in SB) (p<0.001). When calculating the receiver-operator characteristic (ROC) curve, a cut-off value for the pixel score of 506.65 was detected as most appropriate. At this cut-off value, sensitivity of the new diagnostic method amounted to 100% and specificity to 80%. The positive and negative predictive value accounted for 59% and 100%. Regarding the handling properties of the DIABRUX, wear comfort and practicability (for each Median=8) were found to be advantageous.
Conclusions: The new diagnostic method appears to be a valid and user-friendly tool that can be used for preventive dentistry and for the acquisition of larger sample sizes within sophisticated study designs.
Methods: Overall 45 subjects (10 SB and 35 non-SB subjects) participated in this investigation. For SB diagnosis, each participant received a two-night ambulatory polysomnographic recording (PSG) including audio-video recordings. The new diagnostic method consists of a 0.5 mm narrow diagnostic plate (DIABRUX) that was manufactured in a vacuum-press similar to a hard plate. After identification of SB and non SB subjects, each subject had to wear the DIABRUX for five consecutive nights and the occurring abrasion on the surface was automatically calculated by a specifically for this purpose developed software in pixels thus resulting in a sum score, viz. the pixel score.
Results: The comparison between the SB and non-SB group estimated a mean pixel score of 1,306.25 (SD 913.22) for the SB group and a mean pixel score of 380.65 (SD 483.29) for the non-SB group (3.4 times higher in SB) (p<0.001). When calculating the receiver-operator characteristic (ROC) curve, a cut-off value for the pixel score of 506.65 was detected as most appropriate. At this cut-off value, sensitivity of the new diagnostic method amounted to 100% and specificity to 80%. The positive and negative predictive value accounted for 59% and 100%. Regarding the handling properties of the DIABRUX, wear comfort and practicability (for each Median=8) were found to be advantageous.
Conclusions: The new diagnostic method appears to be a valid and user-friendly tool that can be used for preventive dentistry and for the acquisition of larger sample sizes within sophisticated study designs.