Presented by Morgan Gwin, BSc, DDS



Instructor: Morgan Gwin, BSc, DDS

Location: On-Demand

  • Washington AGD Members: $25
  • AGD Members: $30
  • AGD Student Members: $15
  • Non-AGD Members: $35

Credit Hours: 1.5 Hours
Subject Code: 610 Fixed Prosthodontics

UWSOD AGD Student Chapter Graduate Prosthodontics Lecture Series


We were taught in dental school that tooth wear comes in 3 varieties: attrition, erosion, and abrasion. But what we weren’t taught is that attrition also comes in different varieties! Pathway wear or the “constricted envelope of function” is one of these varieties of attrition that you may not have heard of, but you’ve likely seen in your patients. This lecture will teach you what “Pathway Wear” means, what to look for clinically in your patients, and what can be done to treat it. (HINT: It’s not a night guard). An interesting case presentation of “Invisalign gone-wrong” will be used to demonstrate treatment of a patient with Pathway wear.

Learning Objectives

After the lecture, attendees should be able to:

  • Identify the three characteristic wear facets patterns: edge-to-edge, pathway, and cross-over wear
  • Describe the “Envelope of Motion” and how it differs from the “Envelope of Function”
  • Describe the etiology of pathway wear
  • Identify early and late signs of pathway wear
  • Understand how the etiology directly relates to the treatment and restoration of patients with pathway wear

About the Presenter

Morgan Gwin BSc, DDSDr. Gwin is a 3 rd year Resident in the Graduate Prosthodontics program at the University of Washington. Prior to starting her residency training she had no idea what “Pathway wear” meant, despite taking at least 12 hours of CE on Occlusion. She completed a Doctor of Dental Surgery (2015) and a BSc in Mechanical Engineering (2011) at the University of Alberta in Edmonton, AB, Canada.


Online Course Access:

This virtual meeting is available in the Washington AGD Learning Portal.

Course Details

CE Hours

1.5 Hours

Subject Code

610 Fixed Prosthodontics


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The Washington AGD is a Approved PACE Program Provider for FAGD/MAGD credit. Approval does not imply acceptance by any regulatory authority or AGD endorsement. AGD-Washington, Nationally Approved From 6/1/2018 - 5/31/2024