4.05.23 Jad_peri-implantitis treatment

Question 1

What is the plaque-free zone according to Waerhaug?

Answer 1

0.5 - 2.1 mm
(Average 1.6mm)

Question 2

What are the disadvantages of implantoplasty?

Answer 2

• Reduced implant strength (Strong evidence)
• Titanium particles (Preclinical studies)
• Esthetic concern (Mucosal discoloration, 1 study)
• Temperature increase if proper cooling used (not enough evidence)

Question 3

How does implantoplasty affect the strength of the implant?

Answer 3

Chan
Looked at the mean implant bending & fracture strengths of three experimental groups.
* Wide - implantoplasty = no problem
* Normal - Implant strength decreases by about 1/3
* Narrow - Implant strength decreased by about the same as normal one

Implantoplasty should be performed with caution on narrower implants (3.75mm vs. 4.7mm)

Question 4

What are the steps for submerged regeneration of peri-implantitis lesions?

Answer 4

Wen et al (Wang group)
* Crown removal
* Debridement + curettage
* Implantoplasty
* Air-power driven devices
* Locally delivered antibiotics
* Bone graft
* Resorbable membrane

These steps resulted in significant improvements in clinical (defect fill, PD, BOP) and radiographic outcomes.