Further investigation of spreader loads required to cause vertical root fracture during lateral condensation.
D006801:Humans; D007180:Incisor / Q000293:injuries; D012389:Root Canal Obturation / Q000009:adverse effects* / Q000295:instrumentation; D013314:Stress, Mechanical; D014082:Tooth Fractures / Q000209:etiology*; D014092:Tooth Root / Q000293:injuries*