Design Strategy of Minipig Molars Using Electronic Speckle Pattern Interferometry: Comparison of Deformation under Load between the Tooth‐Mandible Complex and the Isolated Tooth

Abstract

Using electronic speckle pattern interferometry minipig molars were tested under load inside the bone socket and when embedded in a stiff polymer. It is demonstrated that the molar bends in the direction of the load in both configurations even at low loads. This shows that the intrinsic reaction of the tooth crown to load is complemented by the structures supporting the tooth.

Tooth movements are guided by specific contact areas between the tooth root and the jaw bone: A dynamic 3D microCT study of the rat molar

“…The studies by Chattah et al on macaque incisor (Chattah et al, 2011) and the M1 tooth of the mini-pig (Chattah et al, 2009) are of particular relevance to this study as these include observations of the movements of the crowns of these teeth under load while still in the mandible. The responses of these two teeth are very different from each other.…”

“…Previous studies conducted on extracted human premolar teeth (Zaslansky et al, 2006b), primate incisors (Chattah et al, 2011) and minipig molars (Chattah et al, 2009) showed that each tooth type has its own unique response to load. The studies by Chattah et al on macaque incisor (Chattah et al, 2011) and the M1 tooth of the mini-pig (Chattah et al, 2009) are of particular relevance to this study as these include observations of the movements of the crowns of these teeth under load while still in the mandible.…”

“…1 for orientation) (Chattah et al, 2009). The structures responsible for these complex movements reside mainly in the interactions between the tooth roots, the PDL and the alveolar bone and, to a limited extent, the internal structure of the tooth (Chattah et al, 2009(Chattah et al, , 2011. To date, no study has directly visualized the movement of the entire toothroots system in relation to the PDL and alveolar bone.…”

“…These studies showed that the movement of the incisors of a macaque monkey resembles a loaded cantilever (Chattah et al, 2011), whereas the movement of a mini-pig molar resembles a ''seesaw'' that also tilts slightly towards the oral cavity (lingual direction, refer to Fig. 1 for orientation) (Chattah et al, 2009). The structures responsible for these complex movements reside mainly in the interactions between the tooth roots, the PDL and the alveolar bone and, to a limited extent, the internal structure of the tooth (Chattah et al, 2009(Chattah et al, , 2011.…”

New Trends in Dental Biomechanics with Photonics Technologies

“…A similar study was carried out by Kachrimanis [59] to investigate the relationship between post-polymerization of dental composites, with water uptake and thermal fluctuations, by measuring the deformations in the three directions. Chattah et al [60] have used ESPI to study the intrinsic reaction of the tooth crown to load and verified that it is complemented by the structures supporting the tooth. This was further verified in another study.…”