Noncontact intraoral measurement of force-related tooth mobility

Abstract

The aim of this pilot study was to measure force-related tooth mobility. Vertical and horizontal anterior tooth mobility in 31 healthy periodontal subjects was measured by a noncontact optical measurement technique. The subjects continuously increased the force on each tooth by biting on a load cell. An automated software program recorded tooth displacement at 9-N intervals. Vertical and horizontal displacements were subsequently measured. The vector of tooth mobility in the buccal direction was calculated using the Pythagorean theorem. The average displacements over all subjects for each tooth were determined. Global differences were assessed with the Wilcoxon test. There were no significant differences between contralateral teeth overall load stages. There were no significant differences in tooth mobility between the central and lateral incisors except for in the horizontal direction. However, there were significant differences between central incisor and canine and lateral incisor and canine teeth.

Rigidity evaluation of quartz‐fiber splints compared with wire‐composite splints

“…Influence of splint type on splint rigidity (P-values) ruptured fiber apparatus and hematoma within the widened periodontal gap. Various different methods have been introduced for evaluating tooth mobility (3,(21)(22)(23)(24)(25)(26)(28)(29)(30)(31)(32). As a parameter for evaluating rigidity properties of dental trauma splints, the splint effect can be calculated as the difference of initial tooth mobility and mobility after splint insertion (3,10,(16)(17)(18).…”

“…To reduce the influencing effect of initial tooth mobility, the relative splint effect was established (1,13,19) and used in this study. Various different methods have been introduced for evaluating tooth mobility (3,(21)(22)(23)(24)(25)(26)(28)(29)(30)(31)(32). For assessing tooth mobility in vitro, the most commonly used techniques are the Periotest method (1-4, 10, 13, 14, 17, 19) and the displacement evaluation after defined load application with universal testing machines (13,15,16,19,20).…”

“…One current artificial model, consisting of bovine tooth facets, allows the use of an acid-etch technique for splint application. Various in vitro and in vivo tooth mobility assessment methods, such as the periodontometer (17,21), the holographic interferometry (22,23), the laser vibrometry (24), and the photogrammetry (25,26), have been described. Various in vitro and in vivo tooth mobility assessment methods, such as the periodontometer (17,21), the holographic interferometry (22,23), the laser vibrometry (24), and the photogrammetry (25,26), have been described.…”

“…In addition, tooth mobility can be individually adjusted to simulate increased and physiologic mobility (1,13,19). Various in vitro and in vivo tooth mobility assessment methods, such as the periodontometer (17,21), the holographic interferometry (22,23), the laser vibrometry (24), and the photogrammetry (25,26), have been described. The two most commonly used methods to evaluate splint rigidity in vitro are the dynamic Periotest Ò method (1-4, 10, 13, 14, 17, 19) and a static measuring technique using universal testing machines (13,15,16,19,20,27).…”

Influence of adhesive point dimension and splint type on splint rigidity – Evaluation by the dynamic Periotest method

“…The rigidity of dental trauma splints has been evaluated in vivo on healthy volunteers and injured patients and in vitro in animal tissues or artificial models . Those studies applied different methods for measuring tooth mobility, including periodontometry , holographic interferometry , laser vibrometry , and photogrammetry . The methods most frequently used for evaluating dental splint rigidity have been the dynamic Periotest ® and the static universal testing machine .…”