[1. Tsvetanov Ts. Tooth retention., Medical review. 2015; 51 (1): 25-30 [in Bulgarian].]Search in Google Scholar
[2. Tsvetanov Ts, Bakardzhiev A. Tooth retention. Epidemiological, clinical, X-ray and remedial studies. Dental Medicine. 2012; 94(2): 138-144 [in Bulgarian].]Search in Google Scholar
[3. Pavlov NB. Coronectomy of impacted and semi-impacted mandibular third molars. Dissertation, Medical University – Varna, 2017 [in Bulgarian].]Search in Google Scholar
[4. Konstantinova D. Study of the masticatory function in experimental and clinical conditions. PhD Dissertation, 2016,Varna]Search in Google Scholar
[5. Pavlov IP. Lectures on the work of the main digestive glands. USSR Academy of Sciences Publishing House, Science Series, 1949 [in Russian].]Search in Google Scholar
[6. Rowlett, AE. The Gnatho-dynamometer and its use in dentistry, Proc R Soc Med. 1933 Feb;26(4):463-71.10.1177/003591573302600456]Search in Google Scholar
[7. Chakalov I. Wear resistance of dental materials. In vitro researches, Dissertation, Sofia, 2014 [in Bulgarian].]Search in Google Scholar
[8. Fontijn-Tekam FA, Van Der Bilt A, Abbink JH, Bosman F. Swallowing threshold and masticatory performance in den-tate adults, Physiol Behav, 2004, 83, 431-436.10.1016/j.physbeh.2004.08.02615581665]Search in Google Scholar
[9. Hoebler C, Karinthi A, Devaux MF et al. Physical and chemical transformations of cereal food during oral digestion in human subjects. Br J Nutr, 1998, 80, 429-36.10.1017/S00071145980014949924264]Search in Google Scholar
[10. Jiffry MTM. Analysis of particles produced at the end of mastication in subjects with normal dentition, J Oral Rehab, 1981, 8, 113-119.10.1111/j.1365-2842.1981.tb00484.x6939801]Search in Google Scholar
[11. Jiffry MTM. Variations in the particles produced at the end of mastication in subjects with different types of dentition, J Oral Rehab 1983, 10, 357-362.10.1111/j.1365-2842.1983.tb00131.x6577161]Search in Google Scholar
[12. Lucas PW, Luke DA. Is food particle size a criterion for the initiation of swallowing, J Oral Rehab, 1986, 13, 127-136.10.1111/j.1365-2842.1986.tb00645.x3457132]Search in Google Scholar
[13. Peyron MA, Mishellany A, Woda A. Particle size distribution of food boluses after mastication of six natural foods, J Dent Res, 2004; 83(7): 578-58210.1177/154405910408300713]Search in Google Scholar
[14. Woda A, Foster K, Mishellany A, Peyron MA. Adaptation of healthy mastication to factors pertaining to the individual or to the food, Physiol Behav, 2006, 89, 28-35.10.1016/j.physbeh.2006.02.01316581096]Search in Google Scholar
[15. Bornhorst GM, Singh RP. Bolus formation and disintegration during digestion of food carbohydrates. Comprehensive Reviews in Food Science and Food Safety, 2012, 11, 101-118.10.1111/j.1541-4337.2011.00172.x]Search in Google Scholar