Dentaltown September 2015 - (Page 68)

radiology feature Seeing the True Resorption Picture by Shawneen M. Gonzalez DDS, MS External resorption. Note the blunting of the apices on the teeth shown. R esorption is the loss of tooth structure due to odontoclastic processes. It may occur on either the external surface (external resorption) or the internal surface (internal resorption) of a tooth. Both external resorption and internal resorption can involve either the root or crown. External resorption External resorption starts from the external surface of a tooth and moves toward the pulp chamber and/or rootcanal space. External resorption is more common than internal resorption and is frequently seen at the apices of the mandibular incisors, canines and premolars. 68 SEPTEMBER 2015 // dentaltown.com Internal resorption. Note the enlargement of the lateral incisor root-canal space and how this area is continuous with the canal. Invasive cervical resorption. Note the loss of tooth structure in the cervical regions of the canine and first premolar. The root-canal space appears to be intact with a thin layer of dentin separating it from the resorptive process. It can occur on any portion of a tooth that is within bone. One subcategory of external resorption starts at the cervical region of a tooth and quickly moves throughout the root, sparing the pulp chamber and root-canal space until the fi nal stages of resorption. This subcategory is referred to as invasive cervical resorption. The etiology of external resorption has been attributed to many things, including but not limited to: local inflammatory lesions, trauma, re-implanted teeth, neoplasms, cysts, excessive mechanical and occlusal forces and adjacent impacted teeth-however, it is frequently idiopathic. External resorption typically does not present with any clinical signs or symptoms, as the affected tooth structure is surrounded by bone. Radiographic appearances External resorption that occurs at the apex of a tooth presents as a blunted root apex instead of nicely tapering to a point. If it occurs on the lateral root surface, it may present on a radiograph as a notching or concave defect on the mesial or distal root surface. If it occurs on the lateral root surface and is positioned over the pulp chamber and/or root-canal space, it presents as a well-defi ned, radiolucent area. To determine if the radiolucent area is coming from the lateral root http://www.dentaltown.com

Table of Contents for the Digital Edition of Dentaltown September 2015

On Dentaltown.com
Continuing Education Update
Industry News
Product Profile: Planmeca
New Products
You Should Know: Lean Dental Solutions
Practice Solutions: Ultradent
Ad Index
Dentally Incorrect
CONTINUING EDUCATION: Considerations for Treatment of External Cervical Invasive Resorption
Case Report: Microbrush Stamp Technique
Working Through Pain: How Chronic Conditions Affect Dentists
HOWARD SPEAKS: Know Your Numbers
PROFESSIONAL COURTESY: TV Shows for Dentists
Passivhaus: Dentists Get Their Green On
A Green Dentist in a Bluegrass State
NuSmile Preveneered SSC Tips
Yet Again, Immediate Molar— Drill First, Extract Later
Turning Over a New Leaf
The 5 Tenets of Practice Success
Understanding the Sjögren’s Patient: Facilitating Diagnosis of Sjögren’s Syndrome
Sleepy Hollow Dentist Wants to Make a Change
Seeing the True Resorption Picture
Oral Squamous-Cell Carcinoma Detection
Solutions for Effectively Managing a Dental Offi ce
Seminar and Travel Pay: It’s No Vacation
Insurance Management is Easy if You Start with Evaluation

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