implant concepts
Implants - surgical procedure driven by prosthetics
Bone is the first requirement (sets the tone)*
Surgeons focus - 3-D bone to imp relationship
Soft tissue depends on bone (is the issue)*
Missing bone is the limiting factor for esthetics
Imp-tooth & imp-imp distance is critical
Lacks of esthetics is unacceptable
Esthetic Hierarchy
Restoration
Soft Tissue Form
Implant Placement
Site Development
Why An Implant?
Segment the case
Decrease future costs
Increase strength of the restoration
Preserve bone
Patient able to floss
Cosmetics
Psychological health
Implant Success is Dependent Upon
Implant stability
Good restorative position
Implant Stability Dependent Upon
Bone quantity
Bone quality
Good Restorative Position is Dependent Upon
Bone quantity and quality
Adequate gingiva – esthetics
Ideal 3-D implant placement
Timing of implant placement
Implant Advantages
Maintenance of bone
Improved stability of prosthesis
Improved proprioception
Increased support
Direct occlusal loads
No caries or endo
Improved psychological health
Consequences of Bone Loss
Denture retention difficult
Reverse smile line
Minimal display of maxillary teeth
Upper lip does not follow mx incisal edge
Hypererupted mand anterior teeth “combination sx”
Resorbed max ridge
Loss of teeth
Decreased V.D.
Increased nasal-labial fold
Prominent chin
Pointed nose
Witch‘s profile
Which Graft
Nothing
Bone Graft? o Autograft, allograft, xenograft, synthograft, combograft
Membrane? o Non-resorbable, Resorbable – bovine, porcine, human, synth
Growth factors o PRGF, PRP, Emdogain, rhPDGF-BB (Gem 21),rhBMP-2(Infuse)
Soft tissue graft? o Autograft, Allograft, Xenograft
All or some combination of the above
Extraction Facts
General DDS extract 23 million teeth/year
First year – 25% loss of bony width
First year – multiple extractions 4 mm loss of vertical
Years 2 to 3 – 40% bone loss
Tooth Extraction Sequellae
Resorpton and remodeling
Insufficient bone for implant placement
Increased crown to root ratio
Gingival loss
Recession at adjacent teeth
Lifelong bone resorption
Tooth Extraction -classification
Simple – no flap elevation (and GFs?)
nothing
fdbg & collacote
Complex – flap elevation (and GFs?)
fdbg & membrane
– resorbable or non-resorbable
fdbg & membrane & soft tissue graft
– autogenous or allograft (alloderm TM)
fdbg & soft tissue graft
Tooth Extraction - Simple Grafting Technique
Remove tooth atraumatically o Sulcular incision o Minimal elevation o Ogram system o Consider Piezosurgery
Good degranulation – use neumeyer burs (Brassler)
Copious irrigation – saline and CHX
Hydrate FDBG with water and Growth Factor and fill defect
Place collacote plug
Suture with 4-0 gut, rapide or gortex
Post-extraction changes
Tooth removal spurs external bone resorption o Horizontal 3 - 6 mm o Vertical 1 - 2 mm
Must minimize loss o Via grafting extraction site o Termed “socket preservation” or “ridge preservation” o Atraumatic extraction techniques
The Excessive Loss of Branemark Fixtures in Type IV Bone: A 5 Year Analysis
1054 implants placed in 246 jaws
952 fixtures in Type I, II, III bone
Implant failure rate 3% (29/952)
102 fixtures Type IV bone
Implant failure rate 35% (36/102) in Type IV bone Jaffin and Berman 1991
Tooth Extraction - Ogram Technique
Understand dental anatomy
Section all multi-rooted teeth
Two axis bioengineering principles
Fulcrum at the level of bone – don’t position forceps apically
Micro motion relative to anatomy
Teeth removed quickly
Bone is preserved
Why a membrane?
Resorbable
Collagen o Bovine
Achilles tendon
Pericardium o Porcine o Human
Pericardium
Acelleular dermis
Fascia Lata
PLA/PGA
PRGF
Non-resorbable
Expanded PTFE
(e-PTFE Gortex) o Plain o Titanium re-enforced
Non-expanded PTFE o (n-PTFE Teflon)
What is an ideal membrane?
Space making
Allow nutrients to pass
Does not allow soft tissue cells to pass
Bio-compatible
Does not become easily infected
Maintains its barrier function for 6 months
Resorbs after 6 months
Does not have to be removed
no second surgery
Incision Design
Sulcular circumferential incision
To adjacent palatal line angles
Extend 1 tooth distally
Vertical radicular bone
Perpendicular to bone
At right angle to mesial tooth
Full thickness reflection past MGJ
Explore the buccal plate
Membrane Preparation
Soak in sterile saline or
patient’s blood for 3 - 5 min
Trim (template provided)
Use only curved scissors
Do not tack
Membrane and Graft Placement
Hydrate graft & membrane
Pack loosely into site
Place membrane
Cover the defect
Shy of adjacent teeth
Obtain passive primary closure
Periosteal release may be needed
Membrane Surgical Considerations
Flap preparation
Site preparation
Space beneath the membrane
Lie passively over defect
No sharp edges
Adapt margins of membrane to bone
Cover the defect by 2 mm
Avoid the teeth by 1.5 mm
Stability of the membrane
Obtain primary closure
Closure
Replace flap
Maintain anatomy
Tack vertical with gore
Close vertical (5-0) gut
Pack collacote plug or CTG
Close socket with gore
No pressure on wound
Incision Design
Full thickness flap
Expose buccal plate
7 threads exposed
Verticals 1 tooth lat
Interradicular incisions
Connect with sulcus
Ideal position – 3 D
Autogenous Bone - Harvesting Options
Locally o Rounger, trephine, safescraper
Osteotomy site o Bur slow speed, spoon
Chin or Ramus o Piezosurgery, bur, chisel, trephine
Second Stage Surgery
Palatal surgical flap
Increase tissue thickness
Increase keratinized tissue
Provide proper abutment seating
Facilitate oral hygiene
Provide proper ridge contour
Growth Factors
Autologous o PRGF – Plasma Rich Growth Factors o PRP – Platlet Rich Plasma
Xenologous (Pig) o Enamel Matrix Proteins (amelogenins) - Emdogain
Synthetic o rhPDGF-BB – Gem 21 o rhBMP-2 - Infuse
Site Development hard tissue soft tissue
Site Development - hard tissue options
Orthodonics
Membranes & bone grafting o non-resorbable (titanium reinforced) o resorbable
Block grafts
Sinus grafts
Site Development - soft tissue options
Connective tissue grafting o 1 st stage surgery o Post 1 st stage surgery o 2 nd stage surgery o Post 2 nd stage surgery
Alloderm
Flap management second stage surgery
Guided gingival growth
Orthodontics
Tooth movement moves bone
Vertical defects can be reduced
Bone can be leveled
Potential implant sites created
Radiographic evaluation of marginal bone loss at tooth surfaces facing single
Branemark implants
Decreased horizontal distance between implant and tooth correlated to increased bone loss
Gingival recession around implants 1-year longitudinal prospective study
63 implants in 11 patients
evaluated at baseline, 1 week, 1 month, 3 months, 6 months, 9 months, and 1 year
majority of the recession occurred within the first 3 months
80% of all sites exhibited recession on the buccal
wait 3 months for tissue to stabilize before crown
What is Osseoguard ?
Type I Bovine Collagen
Bovine Achilles Tendon
U.S.D.A Certified
Australian Bovine Source
Manufactured in U.S. by Collagen Matrix Inc
Implant Surgical Placement - When?
Post extraction
delayed
Two months post extraction
– immediate delayed
At the time of extraction
immediate
Site Development Implant Placement Provisionalization
Without Implant Placement
Six months post exo
Two months post exo
At the time of exo
With Implant Placement
• Six months post exo
• implant, heal, expose, heal, temp
• implant, heal, expose, temp
• implant and temp – immed temp
• Two months post exo
• implant, heal, expose, heal, temp
• implant, heal, expose, temp
• implant and temp – immed temp
• At the time of exo
• implant, heal, expose, heal, temp
• implant, heal, expose, temp
• implant and temp – immed temp
Implant Placement Two months post extraction - disadvantages
• No immed gratification
• May still need CTG
• Bone resorption
• Bone grafting needed
• May lose papillae
Implant Placement Two months post extraction - benefits
• Soft tissue has healed
• No need for CTG
• No anatomic distortion
• Infection has healed
• Less surgery needed
• Less technique sensitive?
• Some bony healing
Immediate Implant - benefits
• One surgical visit
• Patient committed to imp
• Shorter treatment time
• Papillae preservation
Immediate Implant - disadvantages
• Must deal with infection
• Site larger than implant
• Bone graft needed
• Gingival closure difficult
• Membrane exposure
• Provisionalization
• Technique sensitive
• Rececession
Immediate Occlusal Loading (IOL)
Provisional or final restoration is in function with contact in centric occlusion, lateral working and balancing movements.
Requires multiple implants rigidly splinted by a fixed prosthesis.
Five-year prospective study of immediate/early loading of fixed prostheses in completely edentulous jaws with a bone quality-based implant system
• Immediate load cases followed average 2.6 years
• Average bone loss first year < 0.7 mm
• No implant failures occurred
• Bone loss similar to a two staged approach
Immediate Non-Occlusal Loading
Provisional restoration is not in function, has no contact in centric or non-centric occlusion.
Can be accomplished with single tooth or multiple restorations.
Immediate Non-Occlusal Loading - Advantages
• Fewer appointments
• Stimulate bone formation
• Preserve esthetics
• Form a “niche” practice
Immediate Temporization
• Primary stability a must
• Dense cortical bone preferred
• Instability > micromovement
• Instability > fibrous ecapsulation
• Within 48 hours of implant surgery
PreFormance™ Posts And Cylinders
• For screw retained or cemented restorations
• Packaged with hexed titanium alloy screw
• Knurled surface for mechanical retention
• Titanium alloy interface
• Non-Hexed available
Five-year prospective study of immediate/early loading of fixed prostheses in completely edentulous jaws with a bone quality-based implant system
• Immediate load cases followed average 2.6 years
• Average bone loss first year < 0.7 mm
• No implant failures occurred
• Bone loss similar to a two staged approach
“25 percent of people without teeth reported that they avoided close relationships because of fear of rejection when their toothlessness was discovered.”
Process for Creating CAM StructSURE ™ Bars
• Make impression and pour cast
• Fabricate occlusion rim & verification index
• Set denture teeth and wax for try-in
• Scan analogs and wax try-in
• Design bar in CAD
• Mill bar from CAD design (CAM)
• Polish bar and add attachments
• Tooth/bar try-in
• Process denture with attachments in acrylic
Immediate occlusal loading of Osseotite implants in the lower edentulous jaw. A multicenter prospective study
• 325 Osseotite implants inserted & loaded
• Temp prosthesis delivered within 4 hours
• Final delivered in 6 months
• Implant Success: 99.4% 12-60 months post insert
• Crestal bone loss similar to that reported for standard delayed loading protocols.
1047 Old Post Road Fairfield, CT 06824
Voice (203) 254-2006 mike@sonickdmd.com
Dr. Michael Sonick is a full time practicing periodontist and implant surgeon in Fairfield,
Connecticut. He is on the Editorial Board of Compendium of Continuing Dental
Education, Functional Esthetics and Restorative Dentistry, Inside Dentistry, Journal of
Implant and Advanced Clinical Dentistry, Journal of Implant and Reconstructive
Dentistry, and Dental XP. He currently is a Guest Lecturer at New York University School of Dentistry in their international dental program was previously a Clinical Assistant
Professor in the Department of Surgery at Yale University School of Medicine and
University School of Dental Medicine.
He is a frequent lecturer throughout the United States and abroad. His diverse lecture topics include cosmetic periodontics, dental esthetics, periodontal surgical technique, diagnosis and treatment planning, dental implant surgery, advanced hard and soft tissue grafting, sinus grafting, and practice management.
Dr. Sonick is the founder and director of the Fairfield County Dental Club, an advanced continuing education organization with over 100 active members. Dr. Sonick is also the founder and director of Sonick Seminars, LLC, a multidisciplinary teaching institute located in his clinical office and teaching center. Courses are given on all surgical aspects of periodontics and implant dentistry. Unique to this program is the three part continuum: dentists get to observe live surgery, participate during the Hand’s on portion and attend lectures. Courses are limited to 20 participants to maintain the intimacy of the group and to facilitate a great educational experience. Interested participants wishing to participate can contact Carole Brown at 203 254-2006 or visit us
on our website, www.sonickdmd.com.
Dr. Sonick is a frequent contributor to dental literature having published articles on periodontal surgical technique, esthetics, dental implants, bone grafting, gingival grafting, and radiographic protocol for predictable implant placement. Dr. Sonick is the recipient of an Honorary Membership in the Indian Society of Periodontists,
Fellowship in the American College of Dentists, Fellowship in the Pierre Fauchard Society and a member of Who's Who in Dentistry. The General Dental Practice Residents at
Yale New Haven Hospital have awarded Dr. Michael Sonick the honor of “Teacher of the Year.”
Dr. Sonick completed his undergraduate college education at Colgate University in
1975. He received his DMD from University of Connecticut School of Dental Medicine in
1979. He completed his residency in periodontics at Emory University in Atlanta in 1983.
He received implant training at the Branemark Clinic at the University of Gotenborg in
Sweden in 1986 and at Harvard.