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In-Office Milling vs. Lab Fabrication: Making Case Decisions

June 14, 2019
Chad C. Duplantis image
Chad C. Duplantis, DDS

Course Objectives

1 CE Credit

Intraoral scanning offers many benefits to the modern dental practice, including improved accuracy, efficiency, precision and patient comfort. Further, digital impressions reduce the time and cost required to produce the restoration. To streamline the restorative process further, in-office milling can be added, affording patients the opportunity to receive the restoration in a single visit for cases that meet certain criteria. In this multimedia presentation, Dr. Chad Duplantis examines the criteria for determining which cases should be milled in-office and which should instead be sent to a digitally adept dental laboratory for fabrication. Topics include:

  • Patient and doctor benefits of intraoral scanning and in-office milling
  • Step-by-step restorative workflow for in-office milling
  • Basic protocol for lab-fabricated restorations produced from digital impressions
  • Five criteria for deciding between in-office milling and lab fabrication
  • Functional, esthetic and time requirements for restorations milled in-office
  • Basic digital impression-taking technique
  • Digital crown design using an in-office mill

Summary

The criteria for determining whether a digital impression should be used to produce a restoration in-office or sent to the lab for fabrication are straightforward. By assessing the tooth’s location, surrounding dentition, parafunctional habits, the stump shade, and the doctor’s and patient’s schedule on the day of consultation, this decision can be made with a high degree of confidence. Whichever method of fabrication is chosen, these technologies afford significant cost savings and allow patients to receive restorations in less time than those produced from conventional impressions.

CAUTION: When viewing the techniques, procedures, theories and materials presented, you must make your own decisions about specific treatment for patients and exercise professional judgment regarding the need for further clinical testing or education and your own clinical expertise before trying to implement new procedures.

Recognition & Approval

Glidewell Education Center is an ADA CERP Recognized Provider. ADA CERP is a service of the American Dental Association to assist dental professionals in identifying quality providers of continuing dental education. ADA CERP does not approve or endorse individual courses or instructors, nor does it imply acceptance of credit hours by boards of dentistry.

Glidewell Education Center
Nationally Approved PACE Provider for FAGD/MAGD credit
Approval does not imply acceptance by any regulatory authority, or AGD endorsement. 3/1/2021 to 2/29/2024.
Provider ID# 216789

Chad C. Duplantis image
Chad C. Duplantis, DDS

Dr. Chad Duplantis is a graduate of the School of Dentistry at the University of Texas Health Science Center at San Antonio. He has been in private practice since 2000 in the Fort Worth, Texas, area, and has been incorporating CAD/CAM technology into his practice since 2004. Dr. Duplantis lectures and publishes frequently in the field of digital dentistry, with a particular focus on how to transition new technology into the private dental practice.


References

  1. Ng J, Ruse D, Wyatt C. A comparison of the marginal fit of crowns fabricated with digital and conventional methods. J Prosthet Dent. 2014 Sep;112(3):555-60.
  2. Zarauz C, Valverde A, Martinez-Rus F, Hassan B, Pradíes G. Clinical evaluation comparing the fit of all-ceramic crowns obtained from silicone and digital intraoral impressions. Clin Oral Investig. 2016 May;20(4):799-806.
  3. Yuzbasioglu E, Kurt H, Turunc R, Bilir H. Comparison of digital and conventional impression techniques: evaluation of patients’ perception, treatment comfort, effectiveness and clinical outcomes. BMC Oral Health. 2014 Jan 30;14:10.
  4. Pradíes G, Zarauz C, Valverde A, Ferreiroa A, Martínez-Rus F. Clinical evaluation comparing the fit of all-ceramic crowns obtained from silicone and digital intraoral impressions based on wavefront sampling technology. J Dent. 2015 Feb;43(2):201-8.

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