Influence of electronically controlled periapical instrumentation on periapical healing (CROSBI ID 510942)
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Podaci o odgovornosti
Kuiš, Davor ; Kovačević, Maja ; Horvat, Jelena ; Šnjarić, Damir ; Bešlić, Snježana ; Tamarut, Tomislav
engleski
Influence of electronically controlled periapical instrumentation on periapical healing
Aim: To study the influence of electronically controlled periapical instrumentation on the healing of chronic periapical lesions in the teeth of dogs. Methodology: After inducing periapical lesions in six mongrel dogs for 35 days, root canal treatment was performed using two different protocols. In group 1"intracanal instrumentation” (3 dogs - 17 canals), canals were instrumented to the apical delta with crowndown technique using ProFile (Maillefer Dentsply, Switzerland) instruments and then filled with Thermafil obturators (Maillefer Dentsply, Switzerland). In group 2, “ electronically controlled periapical instrumentation” (3 dogs - 18 canals), following the same procedure as in group 1, the apical delta was perforated and additional instrumentation was performed using a hand H– file to the length determined by a resistance type apex locator (EED– 11, Struja, Croatia), on average 1.05 mm beyond the apex. Canals were filled as in the first group, 2 mm shorter then the apical foramen, where a new artificial apical constriction was created. Thirty-five days after filling, undemineralized sections 5– 7 μ m thick were stained with Toluidine blue and analyzed using light microscopy. Histomorphometric indices (lesion width, lesion length, osteoid surface and osteoclast index) were measured using a computer program (ISSA, VAMS, Croatia). Results were statistically analyzed using Mann-Whitney U test. Results: The difference between groups in terms of lesion width was not statistically significant (group 1: 2.76 mm ; group 2: 2.67 mm ; p > 0.05). The differences in lesion length (group 1: 0.79 mm ; group 2: 1.20 mm), osteoid surface (group 1: 7 % ; group 2: 30 %) and osteoclast index (group 1: 75.96 mm-2 ; group 2: 5.35 mm-2) were statistically significant (p < 0.05). Conclusions: Electronically controlled periapical instrumentation resulted in enlarged periapical lesion (demonstrated by greater lesion length). After a 35-day healing period enhanced healing potential was demonstrated by lower bone resorption activity (e.g. greater osteoid surface and lower osteoclast index), in the electronically controlled periapical instrument group.
Apical periodontitis; osteoid; osteoclasts; root canal therapy; dog
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Podaci o prilogu
21-22-x.
2005.
nije evidentirano
objavljeno
Podaci o matičnoj publikaciji
0143-2885
Podaci o skupu
Nepoznat skup
poster
29.02.1904-29.02.2096
Povezanost rada
Veterinarska medicina, Dentalna medicina