DEXIS Intraoral Camera Repair opticsaxis perpendicularityintraoral camera troubleshootingscanner accuracy improvementsensor rebootingDental Scaler Thread Damagescanning best practicesresolution limitationspatient safety dentistrydigital dental imaging accuracyCAM programmingsensor durability repairequipment safetyDEXIS X-ray best upkeepsilicone layer
