Samar Seif El Nasr Mohamed, Enas Anter Abd El Ghafar And Nashwa Salah Mohamed,

ABSTRACT
Background: This Study Aimed To Evaluate The Frequency Of Root Fenestration And Dehiscence In A Sample Of Adult Egyptian Population Using CBCT.

Materials and Methods: 100 CBCT Scans Showing Both Maxillary And Mandibular Dentation �with Total Number Of 2576 Teeth� Were Selected From The Database Of OMFR Department, Faculty Of Dentistry, Cairo University, Based On Certain Eligibility Criteria. Identification Of Fenestration And Dehiscence On CBCT Scans Was Done Using The Identification Criteria First Mentioned By Davies Et Al 1974.

Results: Fenestration Was Found In 17 % Of The Population With A Total Of 26 Affected Teeth (representing 1% Of The Involved Teeth) While Dehiscence Was Found In 50% Of The Population With A Total Of 194 Affected Teeth (representing 7.5% Of The Involved Teeth). Upper 2nd Molars Showed The Highest Prevalence Of Fenestration While Lower Central Incisors Showed The Highest Prevalence Of Dehiscence. Gender Was Found Not Significantly Affecting The Incidence Of Both Defects, While Age Was Significantly Affecting The Incidence Of Dehiscence, Where Older Subjects Were Found To Be 11.5 Times More Prone To Develop Dehiscence Than Younger Subjects.

Conclusions: The Relative Common Finding (50%) Of Dehiscence And To Lesser Extent (17%) Fenestrations Supports The Need For CBCT Examination Before Any Surgical &/or Implant Treatment Procedures Even In Areas Believed Previously To Be Safe Zones �lower Anterior Region� To Avoid Complications Related To The Initial Presence Of Fenestrations And Dehiscence.