Vertical Force Induced with WaveOne and WaveOne Gold Systems during Canal Shaping

Area of Science:

• Endodontics
• Dental Materials Science
• Biomechanical Engineering

Background:

• Root canal shaping involves mechanical instrumentation to prepare the root canal system.
• Vertical forces generated during shaping can impact procedural safety and outcomes.
• Evaluating new instrumentation systems for reduced procedural risks is crucial.

Purpose of the Study:

• To compare the vertical forces induced by WaveOne (WO) and WaveOne Gold (WOG) systems during root canal shaping.
• To assess differences in apical and coronal forces between the two reciprocating systems.

Main Methods:

• Maxillary premolar root canals (n=30) were shaped using either WO or WOG Primary instruments.
• Vertical forces in apical and coronal directions were measured during instrumentation.
• Statistical analysis included Mann-Whitney U test for peak forces and Student t test for instrumentation time.

Main Results:

• Both WO and WOG systems showed increased forces with successive instrument use.
• WO generated significantly higher peak forces in both apical and coronal directions compared to WOG.
• Significant differences were observed in the first and third apical insertions (P < .01) and first and second coronal insertions (P < .05).

Conclusions:

• The WaveOne Gold system produced significantly lower vertical forces than the original WaveOne system.
• WOG may offer a reduced risk of procedural complications due to lower induced forces.