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Treatment Algorithm · Module
Implant occlusion & parafunction control
Designing an occlusal scheme that protects the implant–bone interface. Built on the implant-protected occlusion concept — reduced cusp inclines, axially directed centric contacts, and elimination of interferences — with parafunction as the dominant risk modifier.
Use: Occlusal design reference
Goal: Reduce crestal overload
Modifier: Bruxism / parafunction
01 — Principles
Implant-protected occlusion & the parafunction risk
Implants lack a periodontal ligament, so they tolerate load less forgivingly than teeth. The occlusal scheme aims to direct force axially and minimize lateral bending moments.
Concept
Implant-protected occlusion
- Axial loading over the implant long axis
- Reduced cusp inclination to lower bending moment
- Narrowed occlusal table; centered fossa contacts
- No premature contacts in maximum intercuspation
Excursions
Guidance & interferences
- No working or balancing interferences on implants
- Shallow anterior guidance where feasible
- Share/disclude guidance onto natural teeth when present
- Avoid posterior implant contacts in excursion
Risk
Bruxism & parafunction
- Magnifies load magnitude, duration and direction
- Linked to higher technical/mechanical complications
- Mitigate: more/wider implants, no cantilevers, splinting
- Occlusal nightguard for known bruxers
02 — Decision Pathway
Interactive occlusal-scheme selector
Combine the prosthesis extent, what opposes it, and parafunction status. Tap the scenario that matches the case.
Tap the clinical scenario for the restoration.
Step 1 — What is the scenario?
SINGLE / SHORT
Single or short-span, non-bruxer
Opposing natural dentition, no parafunction.
FULL-ARCH
Full-arch implant prosthesis
Especially implant-opposing-implant.
BRUXER
Confirmed bruxer / parafunction
Any extent — heavy or sustained loading.
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03 — Quick Reference
Occlusal adjustments by scenario
Targeted modifications. Use light foil (shimstock) checks; verify contacts under both light and firm closure.
| Scenario | Centric contact | Excursive scheme | Nightguard |
|---|
| Single, opposing natural | Light contact at firm clench; clears under light tap (infraocclusion ~30µm concept) | No implant working/balancing contact; guide on natural teeth | If risk factors |
| Implant opposing implant | Even simultaneous contacts; narrowed table | Mutually protected, shallow guidance | Consider |
| Full-arch | Bilateral even centric stops; axial loading | Group function or shallow canine guidance; eliminate balancing | Recommended |
| Bruxer | Reduced cusp incline, flatter table, no premature contacts | No posterior excursive interference; minimize cantilevers | Essential |
Reference
Sources & clinical disclaimer
For licensed clinicians — educational use only. This algorithm summarizes published concepts and is not a substitute for individual clinical judgment, examination, or the standard of care in your jurisdiction. Occlusal targets are conceptual; verify contacts clinically for each case.
- Misch CE, Bidez MW. Implant-protected occlusion: a biomechanical rationale. Compend Contin Educ Dent. 1994;15(11):1330–1343.
- Kim Y, Oh TJ, Misch CE, Wang HL. Occlusal considerations in implant therapy: clinical guidelines with biomechanical rationale. Clin Oral Implants Res. 2005;16(1):26–35.
- Koyano K, Esaki D. Occlusion on oral implants: current clinical guidelines. J Oral Rehabil. 2015;42(2):153–161.
Last reviewed: June 2026 · Next review due: June 2027 · Version 1.0