Biomedical subjects

H Brkic

Publications and source records attributed to H Brkic.

5 recordsLinked to original sources

PubMed2006

Age estimation methods using anthropological parameters on human teeth-(A0736).

The research was conducted on the 160 intact extracted human teeth with one and two roots of the known age and sex. The teeth were disinfected, dried and X-rayed. After that the section of the longitudinal cut through the teeth was performed in order to facilitate monitoring of all tissues and morphological characteristics of the teeth. The age was determined in three ways: Method 1 [G.Bang, E. Ramm, Determination of age in humans from root dentin transparency, Acta Odontol. Scand. 28 (1970) 3-35]--analysis of the translucency of the root dentine, Method 2 [S. Kvaal, T. Solheim, A non-destructive dental method for age estimation, J. Forensic Odonto-stomatol. 12 (1994) 6-11]--analysis of the root and the root canal from the X-ray, Method 3 [G. Johanson, Age determination from human teeth, Odontol. Revy. 22 (1971) 1-126]--analysis of six parameters on each teeth. All data were subject to the correlation and regression analysis which showed the following: all of the three applied methods were in the significant correlation with the real age, and the best of them proved to be Method 3 where the coefficient of correlation was 0.85, p<0.001. The teeth of the maxilla are more convenient for the age determination than the teeth of mandible. They are in the significant strong correlation with the known real age, and in Method 3, the coefficient of correlation is 0.78, p<0.001. Age determination of the teeth with two roots is in significant correlation with the known real age p<0.001 in relation to the determined age on the teeth with one root. The results show that sex too, is in significant correlation with the real age, p<0.001. In practice, the methods used and the results achieved in this research have been enabling the dental age estimation of human remains from mass graves after the 1991 war in Croatia.

Adolescent↗

PubMed2000

Odontological identification of human remains from mass graves in Croatia.

This paper reports the results and methods of dental identification of 1000 human remains exhumed from mass graves in Croatia up to July 1998. Personal identification of the victims was performed at the Department of Forensic Medicine and Criminology at the School of Medicine in Zagreb. A forensic odontologist participated in the identification process by carrying out the dental identification. A total of 824 victims were positively identified, while 176 victims remained unidentified. Dental identification based on available dental antemortem data was achieved in 25% of the cases. Dental identification based on dental charts was achieved in 35%, on x-rays in 15%, on photographs of teeth in 22%, on interviews in 18%, and on confirmation by odontologists in 10% of the cases. Teeth, in combination with anthropological parameters, age, sex and height, as well as other specific characteristics such as tattoos, personal identification cards, clothes, jewellery and DNA, were helpful for identification of 64% of the victims, but the significance for the identification was not dominant. Only in 11% of the cases was identification achieved by other relevant means and teeth not used at all. Identification procedures in Croatia will continue until another 1700 people who are still missing or kept as prisoners of war since the aggression on Croatia in 1991 are found and/or identified.

Adolescent↗

PubMed1997

Dental identification of war victims from Petrinja in Croatia.

In this paper the authors report their experiences and problems encountered in the identification of war victims from Petrinja in Croatia. Soon after Croatian forces regained Petrinja in 1995, four mass graves were discovered from which the bodies of 46 civilians, 38 males and 8 females, were recovered. Identification of the victims was performed at the Department of Forensic Medicine and Criminology at the School of Medicine in Zagreb. A forensic odonto-stomatologist from the Department of Dental Anthropology of the School of Dental Medicine at the University of Zagreb participated in the identification process by carrying out dental identifications. A total of 27 victims (59%) were identified, while 19 (41%) are at present still unidentified. Identification by supportive and anthropological evidence (e.g. sex, age, height, personal documents, dress, jewellery) was achieved in 43% of cases, while identification based only on dental records was achieved in 16%. The most useful dental characteristics for the purpose of identification were fixed and removable prosthetic appliances for oral rehabilitation. The reason for the low number of dental identifications was the lack of antemortem dental data which could be compared with postmortem dental records.

Croatia↗

PubMed1995

The bond strength of polymers and metal surfaces using the 'silicoater' technique.

The silicoater technique, or silicoating, is a chemical bond system (makes mechanical retentions unnecessary) which prevents the rising of a gap in the margin area between resin and metal. This procedure solves the problems of fracture and detachment of the veneer or its discolourization. The purpose of this investigation was to find out the values of the bond strength achieved by using the silicoater technique on Ag-Pd alloy with smooth surface and with mechanical retentions on the surface. Ninety specimens were divided into groups, subjected to water storage and thermocycling. The values of the bond strength were investigated in combination with this technique with Ag-Pd alloy and three veneer materials. The silicoater technique gave the best results in combination with Dentacolor XS veneer material and mechanical retentions on the surface of the dental alloy.

Acrylic Resins↗

PubMed1994

Shape of the craniofacial complex in patients with Klinefelter syndrome.

The shape and size of the craniofacial complex in 35 adults with Klinefelter syndrome (47,XXY) were analyzed cephalometrically and compared with 60 control males. Twenty-four angular and 18 linear measurements were obtained for each subject. The results showed that the 47,XXY males were different from the controls in several areas of the craniofacial skeleton. Most of the differences were located in the cranial base and the cranial base angle (p < 0.02). The length of the maxillary base was greater (p < 0.05) and more prognathic (p < 0.01) in the study group. The mandible was also longer and more prognathic (p < 0.01).

Adult↗