Naslov
Influence of electronically controlled periapical instrumentation on periapical healing

Autori
Kuiš, Davor ; Kovačević, Maja ; Horvat, Jelena ; Šnjarić, Damir ; Bešlić, Snježana ; Tamarut, Tomislav

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

Mjesto i datum
,

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Apical periodontitis; osteoid; osteoclasts; root canal therapy; dog

Sažetak
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&#8221; (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, &#8220; electronically controlled periapical instrumentation&#8221; (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&#8211; file to the length determined by a resistance type apex locator (EED&#8211; 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&#8211; 7 &#956; 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.

Izvorni jezik
Engleski

Znanstvena područja
Veterinarska medicina, Dentalna medicina

POVEZANOST RADA