Lee Ann Brady, DMD's Dental Blog

  • Home
  • About Dr. Lee Ann Brady
  • Dental Practice
  • Categories
    • Dental Materials
    • Esthetic Dentistry
    • Occlusion/TMD
    • Practice of Dentistry
    • Preventive Dentistry
    • Restorative Dentistry
    • Restorative Techniques
    • Treatment Planning
    • Videos
    • A-Z Topic List
  • Speaker’s Packet Request
  • Contact
You are here: Home / Restorative Dentistry / Esthetic Zone Ratios: Part Two

Esthetic Zone Ratios: Part Two

By Lee Ann Brady on 02.12.17Category: Restorative Dentistry

The second of the esthetic zone ratios looks at tooth proportion. Upper anterior teeth look their most esthetic when the ratio comparing width to length is between 70-80%. This proportion can be measured on a computer screen in pixels using programs like Keynote or Powerpoint and inserting the image into a slide and adding a line as I have done in the image in this post. It is also easy to figure out this ratio by measuring on a model with digital calipers, or from a printed image using a ruler.

If the tooth has a width to length ratio that is less than 70% or greater than 80% and we are going to treatment plan changing it we have to determine where we make the length adjustments. The fist step is to determine the correct position of the incisal edge in the face using a lips at repose or rest photo. From the proposed incisal edge position we can then determine the proper position of the free gingival margin using this ration.

Some simple math can be very helpful when determining the appropriate length to correct this ratio.

  • 70%= width times 1.43
  • 75%=width times 1.33
  • 80%=width times 1.25

 

 

Related

Share

Leave a Comment Cancel

Search

Recent Posts

  • Retraction Paste Technique Sensitivity
  • The Next Generation of Glass Ionomer Cements
  • A Fantastic New Temporary Cement
  • Tissue Blanching When Seating An Implant Restoration
  • Is It Time To Get An Intra-oral Impression Scanner?
  • Does Your Team Order The Dental Materials You Want?

Recent Comments

  • Shavon on Allergic Reaction To A Dental Cleaning?
  • Joe on Stick Bite: Why and How
  • Joan Johnson on Post & Core’s Coming Loose?
  • Rosemary on Ugh, The Margins Are Open!
  • Sakshi on Removing An e.max Restoration
  • Jeremy Montrose on Ugh, The Margins Are Open!

Policies

Terms of Use

Privacy Policy

Cancellations and Refunds

Security Seal

© 2020 Lee Ann Brady LLC, All Rights Reserved Site by CSL