In vitro evaluation of the thermal alterations on the root surface during preparation with different Ni-Ti rotary instruments.
The present study evaluated, in vitro, the temperature alterations on the external root surface during instrumentation with four different rotary systems. A total of 20 extracted human maxillary lateral incisors were instrumented using either the ProFile, MicroMega, Quantec or K3 systems and the thermal alterations on the root surface were recorded by means of three thermocouples attached to the coronal, middle and apical portions of the root. Mean temperature increases no higher than 0.4 degrees C +/- 1.0 degrees C (ProFile system) were recorded, which indicates that these instruments are safe for the surrounding periodontal tissues.
Capelli
Alexandre
A
Department of Restorative Dentistry, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Guerisoli
Danilo M Zanello
DM
Barbin
Eduardo Luiz
EL
Spanó
Júlio César Emboava
JC
Pécora
Jesus Djalma
JD
D001831:Body Temperature; D003722:Dental Alloys; D003762:Dental Instruments; D004869:Equipment Safety; D006358:Hot Temperature; D006801:Humans; D007180:Incisor; D009532:Nickel; D011897:Random Allocation; D018915:Root Canal Preparation / Q000295:instrumentation*; D014025:Titanium; D014092:Tooth Root
D003722:Dental Alloys; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium