Volumetric and morphologic changes due to effect of unilateral extraction of teeth

Year 2016, Volume: 29 Issue: 2, 88 - 94, 01.04.2016

Ayla Kurkcuoglu Can Pelin

https://doi.org/10.5472/MMJoa.2902.05

Cited By: 3

Abstract

Objective: Chewing includes the rhythmic movement of the jaw muscles. In this study, we investigated volumetric changes in the masticatory muscles and morphometric changes in the mandibular condyle due to unilateral extraction of the teeth in the sixth and twelfth weeks of life.Materials and Methods: Eighteen rats were used. The rats were divided into three groups. In the experimental groups (Groups I and II), all of the teeth on one side of the upper and lower jaws of the rats were extracted. In the control group all the teeth were intact. Volumetric changes of the masseter and temporal muscles were evaluated. In addition, morphometric changes of the mandibular condyle were investigated.Results: The measurements performed six weeks after tooth extraction did not reveal any difference in the temporal muscles between the two sides, however the volume of the masseter muscle on the side of the extraction was significantly reduced (Group I). Twelve weeks after the tooth extraction, the volumes of themasseter and temporal muscles showed significant reduction on the side of the extraction (Group II). A morphometric reduction in the mandibular condyle was observed in the longer period of time. No asymmetry was observed either for muscular volumes or for mandibular condyle dimensions in the control group.Conclusion: Unilateral tooth loss may cause volumetric reduction in the masseter and temporal muscles ipsilaterally. However, the cause of the morphometric reduction in the mandibular condyle on the contralateral side in the longer period of time is surprising.Keywords: Masseter muscle, Temporal muscle, Mandibularcondyle, Muscle volume, Dental extraction

References

• Huja SS, Rummel AM, Beck FM. Changes in mechanical properties of bone within the mandibular condyle with age. J Morphol 2009; 269:138-43. doi: 10.1002/jmor.10582
• Parker MW. The significance of occlusion in restorative fentistary. Dent Clin North Am 1993; 37: 341-51.
• Endo Y, Mizutani H, Yasue K, Senga K, Ueda M. Influence of food consistency and dental extractions on the rat mandibular condyle: a morphological, histological and immunohistochemical study. J Craniomaxillofacial Surg
• 26: 185-90.
• Huang Q, Opstelten D, Samman N, Tideman H. Experimentally induced unilateral tooth loss: histochemical
• studies of the temporomandibular joint. J Dent Res 2002; 81:209-13. doi: 10.1177/154405910208100313
• Fujita S, Hoshino K. Histochemical and immunohistochemical studies on the articular disk of the temporomandibular joint in rats. Acta Anat 1989; 134: 26-30.
• Granados JI. The ınfluence of the loss of teeth and attrition eminence. J Prosthet Dent 1979; 42: 78-85.
• Frustman L. The effect of loss of occlusion upon the mandibular joint. Am J Orthodont 1965; 51: 245-61.
• Christensen LV, Ziebert GJ. Effects of experimental loss of teeth on the temporomandibular joint. J Oral Rehabil 1986; 13: 587-98.
• Bani D, Bani T, Bergamini M. Morphologic and biochemical changes of the masseter muscles induced by occlusal wear: studies in a rat model. J Dent Res 1999; 78:1735-44. doi:10.1177/00220345990780111101
• Raustia A M, Salonen M M, Pyhtinen J. Evaluation of masticatory muscles of edentulous patients by computed tomography and electromyography. J Oral Rehabil 1996; 23: 11-6
• Newton JP, Yemm R , Abel RW, Menhinick S. Changes in human jaw muscles with age and dental state . Gerodontology 1993; 10: 16-22.
• Bamaç B, Colak T, Ozbek A, Yenigün E, Çolak S, Bamaç Y. Volumetric determination of medial epicondyle and lateral epicondyle of humerus in male and female volleyball players. Okajimas Folia Anat Jpn 2003; 80:63-9.
• Canan S, Sahin B, Odacı E. Unal B, Aslan H, Bilgiç S. Estimation of the reference volume. volume density and volume ratios by a stereological method: Cavalieri’s Principle. T Klin J Med Sci 2002; 22:7-14.
• Cruz-Orive LM, Weibel ER. Recent stereological methods for cell biology: a brief survey. Lung. Cell Mol Physiol 1990; 2: 148-56.
• Gundersen HJG, Bendtsen TF, Korbo L, et al. Some new simple and efficient stereological methods and their use in pathological research and diagnosis. APMIS 1989; 96: 379-94.
• Kabak M, Gültiken ME, Onuk B. Yeni Zelanda tavşanında (oryctolagus cuniculus l.) articulatio temporomandibularis ve çiğneme kaslarının anatomisi. Ankara Üniv Vet Fak Derg 2007; 54: 149-54.
• Staron RS, Karapondo DL, Kraemer WJ. Skeletal muscle adaptations during early phase of heavy-resistance training in men and women. J Applied Physio 1994; 76:1247–55.
• Takashima M, Kitai N, Murakami S, Furukawa S, Kreiborg S, Takada K. Volume and shape of masticatory muscles in patients with hemifacial microsomia. Cleft Palate Craniofac J 2003; 40:6-12. doi: 20.1177/00220985990780178101
• Stal P, Eriksson PO, Thornell LE. Differences in capillary supply between human orofacial, masticatory and limb muscles. J Musc Res Cell Motil 1996; 17: 183-97.