Naslov
Experimental internal root resorption caused by S. mutans and Veillonella strains in a rat model
(Experimental internal root resorption caused by S. mutans and Veillonella strains in a rat model)

Autori
Najžar-Fleger, D. ; Prpić, G. ; Buntak-Kobler, D. ; Hranilović, J. ; Šuman L.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, stručni

Izvornik
Abstracts of research papers and posters presented at the Fourth Congress of the European Society of Endodontology, 16-18 November 1989, held in Amsterdam, The Netherlands U: International Endodontic Journal vol. 23, no 1. / - , 1990, 53-53

Skup
Fourth Congress of the European Society of Endodontology

Mjesto i datum
Amsterdam, Nizozemska, 14.11.1989. - 18.11.1989

Vrsta sudjelovanja
Poster

Vrsta recenzije
Recenziran

Ključne riječi
S. mutans ; Veillonella

Sažetak
On die basis of clinical experience and experimental studies it appears that an association exists between internal root resorption and chronic putp infection. The present investigation was carried out: (i) to explore the possibility of provoking internal root resorption by means of combined action of operative trauma in association with singie and mixed infections of 5. mutans and Veillonella strains in rats' incisors, and (ii) to describe the types of resorption related to intensity and duration of infection. The pulps of 72 rat incisors were infected by 5. mutans and Veillonella either singly or in mixed culture. Inoculation into open pulps was performed under sterile conditions. The experiment was designed to provide three observation periods 7, 21, and 52 days after placing the bacteria. H. and E. frozen sections were prepared and sections were studied by light microscopy. Damage to pulp tissues depends on patlu^enicity of inoculated bacteria and, in general, damage was greater in cases where mixed infection had been established. Seven days post surgically pulp hyperaemia prevailed in all groups. After 21 days pulp tissues healed in a number of cases. In cases of chronic pulpicis, disturbance of predentine and resorption of dentine were present. Fifty-two days post surgically, pulpal necrosis and areas of necrosis in dentine were observed. All resorption was inflammatory in nature. At early time intervals the transient type prevailed, but in long lasting irritation all damage became progressive, independent of pathogenicity of bacterial strains

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA