01/04/2013
By John Y. Kwan, DDS, Robert Gottlieb, DDS, and Suzanne Newkirk, RDH
|
|
http://www.dentistryiq.com/articles/2013/01/subgingival-anomalies-and-pathologies-viewed-with-the-perioscope-root-fractures-part-3.html |
|
|
In the abstract “A Review of Root Fractures:
Diagnosis, Treatment and Prognosis,” by Malhotra, Kundabala and
Acharaya**, root fractures are defined as fractures involving the
dentin, cementum and pulp and occur in less than 8 percent of traumatic
injuries to permanent teeth.
Root fractures are broadly classified as horizontal (transverse) and vertical root fractures (VRF) and can vary in severity.
Treatment of root fractures depends on a number of factors and is
typically determined by the extent of the subgingival fracture,
remaining coronal tooth structure, location of the fracture line, pulp
vitality and length and morphology of the roots. Frequently, an
interdisciplinary or multidisciplinary approach is required for complete
rehabilitation of the tooth.
Case #1: Horizontal Root Fracture #9
By Robert Gottlieb, DDS, and Suzanne Newkirk, RDH
This 48-year-old female patient was referred for evaluation of tooth
#9, which presented with a 7mm pocket on the straight facial and a 9mm
pocket on the mesial.

#9 Pre-treatment photo

#9 Pre-op X-ray
Note: Endodontic work #’s 7-10 were done years previously in England.
Looking toward the apex of the tooth, the below photo and corresponding
video clearly show a horizontal fracture traversing the root.

Root fractures that develop communication between the gingival sulcus
and the fracture site have a poor prognosis because of bacterial
contamination.
Due to the extent of the above fracture, treatment recommendations for
this patient included extraction and immediate implant placement, which
the patient proceeded with.
The video “Horizontal Root Fractures: Why Guess about a fracture?” may be viewed at:
http://www.youtube.com/watch?v=t-coebmV6cM
Case #2: Horizontal Hair Line Fracture #19
By Robert Gottlieb, DDS, and Suzanne Newkirk, RDH
Root fractures in posterior teeth usually occur as a result of
indirect trauma such as parafunctional habits, traumatic occlusion,
extensive tooth decay and iatrogenic causes, and may be symptomatic, or
non-symptomatic.
This 52-year-old male was referred for a complete periodontal exam. A
chief complaint was sensitivity on the lower left to cold, touch and
pressure on tooth #19, which had recently had a small occlusal composite
placed.
The below photo and corresponding video clearly show two hair line
vertical fractures connected to a horizontal fracture traversing the
buccal surface of tooth #19.

Minor insults (hair line fractures) may lead to concussion injury, or
nonvitality. Management of hairline root fractures may include constant
observation and vitality tests performed on a regular basis.
The video “Hair line root fractures viewed with the Perioscope” may be viewed at:
http://www.youtube.com/watch?v=d5vC8vWwhUU
Case #3: Vertical Root Fracture #15
By Dr. John Y. Kwan
Vertical root fractures typically extend through the long axis of the
root toward the apex and commonly occur in endodontically treated teeth.
Depending upon the severity of the fracture, an interdisciplinary
and/or multidisciplinary approach may be required for functional and
esthetic rehabilitation of the tooth.
Intraosseous fractures typically create deep, narrow, sharply defined
isolated periodontal pockets and radiographic examination may reveal
unilateral thickening of PDL along the fracture side of the root.
If the fracture is not apparent radiographically, diagnostic tests may
be considered using a bite-test, transillumination test, or confirmation
of the VRF via surgical exploration.
Confirmation of root fractures with Perioscopy provides the most minimally invasive, non-surgical method available.
The below photo and corresponding video clearly show a vertical root fracture.

The video “Root Fracture #15M: Perioscopy Video” may be viewed at:
http://www.youtube.com/watch?v=hk7-R3RJG3w
We believe that appropriate management and treatment of root fractures begins with the correct diagnosis.
Prior to Perioscopy, confirmation of root fractures was frequently done
via exploratory flap surgery. Perioscopy provides the most minimally
invasive, non-surgical modality available for confirmation of root
fractures.
More information on Perioscopy may be found at:
http://www.perioscopyinc.com/perioscopy-technology.php
** A Review of Root Fractures: Diagnosis, Treatment and Prognosis
Dent Update. 2011 Nov;38(9):615-6, 619-20, 623-4 passim.
Department of Conservative Dentistry and Endodontics, Manipal College of
Dental Sciences, Mangalore, Manipal University, India.
http://eprints.manipal.edu/2352/1/A_Review_of_Root_Fractures-_Final_print.pdf

Dr.
Kwan is a board-certified periodontist and maintains a private practice
providing periodontal and implant care in Oakland/Berkeley, Calif. He
is an Associate Clinical Professor at the University of California, San
Francisco School of Dentistry. Dr. Kwan is also the President/CEO of
Perioscopy Incorporated.

Dr.
Bob Gottlieb received his Certificate in Periodontics from the
University of Washington. Practicing for 35 years, he was voted one of
Seattle’s Best Dentists. Dr. Gottlieb mentors and directs numerous study
clubs.

Ms.
Newkirk graduated from the University of Alaska, Anchorage, in 1981 and
has dedicated the last 30 years to excellence in clinical dental
hygiene and periodontics. Suzanne is a periodontal therapist, dental
hygiene coach and mentor. She is also a Perioscopy instructor and
speaker. Ms. Newkirk is a member of the American Dental Hygienists'
Association and Washington State Dental Hygienists' Association.
To read articles in
RDH eVillage FOCUS written by John Kwan, Robert Gottlieb, and Suzanne Newkirk, click on
Kwan,
Gottlieb, and
Newkirk.