3.27 IJOI and IJPRD

Question 1

What are the considerations of root coverage techniques of the anterior mandible?

Sabri et al IJPRD

Answer 1

Systematic review
21 included studies (16 case series/ retrospective, 5 comparative studies)

Examined # of affected teeth, recession size, KT width, vestibular depth, frenum, papilla base size, tissue flexibility

RESULTS:
* Only the FGG is associated with esthetic concerns
* A complete reduction of hypersensitivity requires complete root coverage.
* The Laterally Positioned Flap is best for narrow, deep recessions.
* Tunneling and CAF are best for wide recessions

Question 2

Describe the study on “The Root Complex in Posterior Teeth : A Direct Digital Analysis”

Karim Ghishan et al IJPRD

Answer 2

Study design: Digital Morphometric study of extracted posterior teeth at U Iowa Perio

Linear assessments:
* Root length
* Root trunk length
* Furcation entrance and depth
* Root concavity depth and width
* Root surface area (in mm2)

RESULTS:
* Root length ranged from 13 to 14.6 mm
* Root trunk length = averaged 3mm in maxillary molars, 2mm in mandibular molars
* Root concavity: Most common in Maxillary 1st premolars, averaging 0.5 mm deep and 2.6 mm wide
* Root surface area: Greatest in maxillary 1st molars (475 mm2)

Question 3

What is the management of the lingual flap during vertical GBR of the anterior atrophic mandible?

Urban et al IJPRD

Answer 3

Describes anatomy of the anterior mandible area

• Lingual artery: from the external carotid artery
• The sublingual artery occasionally has terminal branches reaching to the coronal aspects of the anterior mandibular ridge. These must be ligated if the surgeon encounters them during the surgery
• Take care with the periosteal releasing incision in this area

Question 4

What is the longitudinal assessment of peri-implant diseases in patients with vs. without a history of periodontitis? - 20 year followup

Roccuzzo et al IJOI

Answer 4

88 patients with 172 implants.
20 year followup
Comparison: History of periodontitis vs. no history periodontitis

RESULTS:
33% of patients had peri-implantitis at the 20 year followup.
There was a SSD between healthy vs. periodontally compromised patients.

The Full Mouth Plaque Score and Compliance were strongly associated with peri-implantitis occurence by the 20-year followup.
* Compliant, hx of periodontitis: OR: 5.5
* Non-compliant, no hx periodontitis: OR: 7.3
* Non-compliant, hx of periodontitis: OR: 12.8

Critiques: Smoking was only assessed at the baseline- not at the 20 year followup.
Nonstandardized radiographs

Question 5

Describe the study on 3D vertical soft tissue augmentation of aesthetically compromised permanent submerged dental implants

Alrmali et al IJOI

Answer 5

The study describes the technique of submerging Class IV subclass B (or C) implants and adding a CTG over them to restore tissue height. A bridge can then be built over that implant and it can be kept submerged.