1 / 15

Device Stability - Introduction

Device Stability - Introduction. retentive capacity (RC) of subpericranial pocket ( SpP ) experiments measure RC. Surgical Technique - Position. minimal incision approach. Surgical Technique - Position. minimal incision approach device assumes “Back” position. “B ack ”.

keren
Download Presentation

Device Stability - Introduction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Device Stability - Introduction • retentive capacity (RC) of subpericranial pocket (SpP) • experiments • measure RC

  2. Surgical Technique - Position • minimal incision approach

  3. Surgical Technique - Position • minimal incision approach • device assumes “Back” position “Back”

  4. Surgical Technique - Position “Up” • minimal incision approach • device assumes “Back” position • anterosuperior(“Up”) placement of device • minimize contact with supporting surfaces “Back”

  5. Freeroll Angle in Recumbent Position

  6. Surgical Technique - Fixation • suture fixation and pedestal • resists displacement • rotation (fantail groove) • sideways (pedestal/suture) • superior/inferior (pedestal) • lateral (tie down suture) • medial (silicone skirt/dura)

  7. Surgical Technique - Fixation • subpericranial pocket • resists displacement • rotation (SpP) • sideways (SpP) • superior/inferior (SpP/bone) • lateral (SpP) • medial (bone)

  8. Retentive Capacity – 5 Series Average Retentive Capacity Versus Age • 81 Patients • 123 Implants • - 42 bilateral • - 39 unilateral Force (N) Avg RC = 5.17 +/- 2.56 N Parabolic Distribution Age (Years)

  9. Retentive Capacity Across Trials * • Repeated Measures ANOVA • Significant Decrease in RC over repeated trials (p<0.05) Force (N) *

  10. Pedestals – 5p • resist displacement • positioning • affect RC of SpP

  11. Pedestals – 5p • resist displacement • positioning • affect RC of SpP?

  12. Pedestals – 5p • no exposed dura • minimize drilling • reduce surgical time (n=43) • right 15.8 minutes • left 14.1 minutes (37.8 hours = 18-20 implants)

  13. Retentive Capacity – 5p (pedestal) Average Retentive Capacity Versus Age 5p 5 Force (N) Age (Years)

  14. Retentive Capacity Across Trials – 5 & 5p 5p 5 Force (N)

  15. Conclusions • without a pedestal • retentive capacity of subpericranial pocket: • is highly variable (5.17 +/- 2.56 N) • decreases with manipulation • with a pedestal • retentive capacity of subpericranial pocket: • is significantly greater • allows positioning of device • diminishes surgical time • decreases with manipulation

More Related