dental scanner moisture damagedigital radiography vet sensorEr:YAG Nd:YAG dental laserpatient psychologytool shape optimizationintraoral sensor USB fixdental apex locator repairHamamatsu C7944digital impression managementthermal cycling damagelayer separationSPC implementationsupport structure failurethird party battery comparisonHu-Friedy ultrasonic tip
