New Animal Model of Extrinsic Dental Erosion—Erosive Effect on the Mouse Molar Teeth

Publication date: Available online 24 August 2018

Source: Archives of Oral Biology

Author(s): Amela Tulek, Muhammad Saeed, Aida Mulic, Kjersti Refsholt Stenhagen, Tor Paaske Utheim, Hilde Kanli Galtung, Cuong Khuu, Minou Nirvani, Marthe Smedmoen Kristiansen, Amer Sehic

Abstract

Objective

Consumption of acidic food and drinks is considered as important risk factor for development of dental erosion. There are severalin vitro and in situ studies focusing on the risk indicators and preventive treatment, however, the need for a standardized animal model has been emphasised for many years. The aim was to establish an animal model of extrinsic dental erosion, which may serve as a standard for future studies to improve our understanding of the erosion.

Design

Two acidic drinks, sports drink and cola drink, were given to young mice for six weeks. Experimental and control (water) molars and incisors were dissected out and observed by scanning electron microscopy (SEM). Mandibular first molars were subsequently ground transversely and observed again by SEM. The tooth height and enamel thickness were measured on the SEM images.

Results

The lingual surface of the mandibular molars was most eroded after consumption of acidic drinks. The cola drink exhibited higher erosive effect on mandibular molars compared to sports drink. The lingual tooth height, compared to control, was about 34% and 18% lower in the cola drink and sports drink molars, respectively. Compared to the control molars, the lingual enamel was about 23% thinner in the sports drink molars and totally eroded on the certain lingual areas of the cola drink molars.

Conclusions

This new animal model of extrinsic dental erosion and the presented method with ground molars observed in SEM are suitable for further studies, which will gain deeper insights into the erosive disease.

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