Korelacija kronološke dobi sa zaživotnim gubitkom tvrdih zubnih tkiva u arheološkom uzorku

doctoral thesis

• Title (english): Correlation of chronological age and lifetime tooth wear in archaeological sample
• Author: Ana Družijanić https://orcid.org/0000-0002-2049-7136
• Mentor: Hrvoje Brkić (mentor)
• Committee member: Jelena Dumančić (predsjednik povjerenstva)
• Committee member: Marin Vodanović (član povjerenstva)
• Committee member: Mario Šlaus (član povjerenstva)
• Committee member: Ivana Čuković Bagić (član povjerenstva)
• Committee member: Ana Ivanišević (član povjerenstva)
• Granter: University of Zagreb; School of Dental Medicine; (Department of Dental Anthropology); (Chair of Forensic Dentistry); Zagreb
• Defense date and country: 2021, Croatia
• Scientific / art field, discipline and subdiscipline: BIOMEDICINE AND HEALTHCARE; Dental Medicine; Morphology of the Dental Tissue System
• Universal decimal classification (UDC): 616.31 - Stomatology

Abstract

Budući da su atricija i abrazija među najčešćim promjenama na tvrdim zubnim tkivima i pojavljuju se usporedo sa starenjem, cilj ovog rada bio je utvrditi korelaciju između procijenjene osealne dobi i gubitka tvrdih zubnih tkiva na arheološkim koštanim ostatcima.
Za potrebe ovog istraživanja korištena je kolekcija skeletalnih ostataka Hrvatske akademije znanosti i umjetnosti (HAZU). U istraživanje su bila uključena 392 uzorka ostataka gornjih i donjih čeljusti sa sedam hrvatskih arheoloških lokaliteta – četiri iz kontinentalne i tri iz primorske Hrvatske. Koštani ostatci pripadaju dvama arheološkim razdobljima – kasnoj antici i ranomu srednjem vijeku. Računalnim sistemom VistaMetrix 1.38. mjerene su na fotografiranim griznim plohama zuba ukupne vidljive površine tvrdih zubnih tkiva i površine tvrdih zubnih tkiva istrošene abrazijom i atricijom. Dobiveni podatci, poput površine izražene u cm², unosili su se u Excelovu tablicu i kao takvi su statistički obrađeni. U statističkoj analizi podataka korišten je Shapiro-Wilkov test, Mann-Whitneyev U test i Kruskal-Wallisov test. Zabilježena je statistički značajna povezanost ukupnoga broja zuba s procijenjenom kronološkom dobi (χ² = 46,3; ƞ² = 0,23; p < 0,001). Ukupan broj zuba negativno korelira s procijenjenom osealnom dobi (r = -0,41; p < 0,001). Ukupna površina raspoloživih zuba opada s procijenjenom osealnom dobi (r = -0,39; p < 0,001), a udio (%) ukupne istrošene površine zuba u odnosu prema ukupnoj raspoloživoj površini raste s procijenjenom osealnom dobi (r = 0,622; p < 0,001). Udio istrošene površine u ukupnoj površini zuba raste s procijenjenom osealnom dobi (r = 0,686; p < 0,001) u uzorcima i muškaraca i žena ( r= 0,534; p < 0,001).
Zaživotni gubitak tvrdih zubnih tkiva pozitivno korelira s osealnom dobi kod obaju spolova, neovisno o promatranom povijesnom razdoblju. Gubitak tvrdih zubnih tkiva zbog atricijskih i abrazivnih promjena, koristeći se računalnim sustavom VistaMetrix 1.38, danas se stoga može koristiti kao pomoć pri određivanju dobi, kako u forenzičkoj stomatologiji tako i u dentalnoj antropologiji i arheologiji.

Abstract (english)

Aim: Knowing that attrition and abrasion are most common wear processes of dental hard tissues, which occur along with aging, the aim of this dissertation is to determine the correlation between dental age and loss of dental hard tissues on archeological bone remains.
Materials and Methods: For the purpose of this research, the collection of skeletal remains of the Croatian Academy of Sciences and Arts (HAZU) was used. The study includes 392 samples of the remains of both upper and lower jaws from 7 Croatian archaeological sites, whereas 4 of them from continental and 3 of them from coastal Croatia. The remains of bones belong to two different archeological periods, late antiquity and early Middle Ages.
VistaMetrix 1.38 computer system was used on digital photography of occlusal tooth surfaces to measure total exposed area of dental hard tissues and surface of dental hard tissues damaged by attrition and abrasion. Data provided were defined in sq cm, and as such were inserted in excel table and processed statistically. In the statistical data analysis, Shapiro-Wilk test, MannWhitney U test and Kruskal-Wallis test were used.
Results: There is a statistically significant correlation between the total teeth number and estimated chronological age (χ² = 46.3, ƞ² = 0.23, p <0.001). Total number of teeth negatively correlates with chronological age (r = -0.41, p <0.001). The total surface area of the teeth available decreases with the estimated chronological age (r = -0.39, p <0.001), while the proportion (%) of the total damaged area of the teeth in relation to the total available area increases with the estimated chronological age (r = 0.622, p <0.001 ). The proportion of affected surface in overall teeth surface increases with the estimated chronological age (r = 0.686; p <0.001) both in males and females (r = 0.534; p <0.001). Conclusion: The lifelong loss of hard dental tissues positively correlates with chronological age in both sexes regardless of historical period. The loss of hard tooth tissues, caused by attrition and abrasive changes, now can be measured by VistaMetrix 1.38 computer system and data obtained can be used to determine age in forensic dentistry as well as forensic anthropology and archeology.

• Keywords: forenzička stomatologija; abrazija zuba; atricija zuba; antropologija
• Keywords (english): Forensic Dentistry; Tooth Abrasion; Tooth Attrition; Anthropology
• Language: croatian
• URN:NBN: urn:nbn:hr:127:490207
• Promotion: 2021
• Study programme: Title: dental medicine; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje biomedicine i zdravstvo, polje dentalna medicina (doktor/doktorica znanosti, područje biomedicine i zdravstvo, polje dentalna medicina)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-02-11 09:26:00