MAUDE Adverse Event Report: KAVO DENTAL GMBH MASTERMATIC LUX M25 L; DENTAL ELECTRICAL HANDPIECE

Model Number M25 L

Device Problem Dent in Material (2526)

Patient Problem Burn(s) (1757)

Event Date 06/29/2023

Event Type  malfunction  

Manufacturer Narrative

The handpiece has been checked visually and functionally against the valid specification.It was found that the head had a dent at the push button.This caused the push button to stick in which caused unusual friction and hence heat up of the push button.A dent is the result of a strong external force, e.G.A drop of the handpiece.To avoid such issues the ifu contains already several notes, warnings and requests how to prepare the handpiece for each treatment and how to use it: warning: hazards for the care provider and the patient.In the case of damage, irregular running noise, excessive vibration, untypical warming or when the cutter or grinder cannot be held.-> do not use further and notify service.Caution: burning hazard from hot instrument head or hot instruments cover.If the instrument overheats, burns may arise in the oral area.->never contact soft tissue with the instrument head or instrument cover the following guidelines must be observed to ensure save use of the electrically driven contra-angle handpieces: >the service instructions for contra-angle handpieces must be precisely following when using kavo spray or quattrocare care systems.> before each use, the contra-angle handpiece must be checked for external damage.> before each use, perform a test run with the contra-angle handpiece, and watch for atypical heating and unusual noise and vibration.> immediately stop using contra-angle handpieces that act unusual.> never press the pushbutton during operation.This also includes lifting the cheek or tongue! to ensure proper function, the medical device must be set up according to the reprocessing methods described in the kavo instructions for use, and the care products and care systems described therein must be used.Kavo recommends specifying a service interval at the dental office for a licensed shop to clean, service and check the functioning of the medical device.This service interval depends on the frequency of use and should be adjusted accordingly.

Event Description

During a crown preparation to tooth #18 the instrument got hot and burned patient's tongue to the size of a nickel.Patient was told to apply vitamine e oil, no follow up necessary for burn.

• Brand Name: MASTERMATIC LUX M25 L
• Type of Device: DENTAL ELECTRICAL HANDPIECE
• Manufacturer (Section D): KAVO DENTAL GMBH; bismarckring 39; biberach / riss, 88400 ; GM 88400
• Manufacturer (Section G): KAVO DENTAL GMBH; bismarckring 39; biberach / riss, 88400 ; GM 88400
• Manufacturer Contact: klaus reisenauer ; bismarckring 39; biberach / riss, 88400 ; GM 88400
• MDR Report Key: 17423654
• MDR Text Key: 320026981
• Report Number: 3003637274-2023-00017
• Device Sequence Number: 1
• Product Code: EGS
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: K143465
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Health Professional,User Facility
• Reporter Occupation: Dentist
• Type of Report: Initial
• Report Date: 07/31/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 07/31/2023
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: M25 L
• Device Catalogue Number: 1.009.3630
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 07/14/2023
• Is the Reporter a Health Professional?: Yes
• Date Manufacturer Received: 07/06/2023
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 07/08/2021
• Is the Device Single Use?: No
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Reuse
• Patient Sequence Number: 1
• Patient Outcome(s): Other