This article is a brief description of different types of occlusion in various cases of edentulousness. I hope it will be useful for science seekers.

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2. The Dorland Medical Dictionary defines occlusion as "closing action" or
"closing state." In dentistry, the relationship between the maxillary and
mandibular teeth during jaw movement and making useful contacts is
called occlusion.
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3. balanced Occlusion
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4. mutually protected
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5. Group function
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6. The three occlusal patterns, Included balanced occlusion, Group function, and
mutually protected, can be successfully used for implant-supported restorations.
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7. (Implant protected occlusion) IPO
• Aim
• Changes in conventional occlusion patterns to coordinate with
implant-supported restorations.
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8. Benito et al., In an overview, stated that patients generally divide
into two main and significant groups:
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9. GroupⅠ
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10. Group Ⅱ
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11. Occlusion of posterior single implant restoration
In this case, the light tapping should be lighter on the
implant's crown than on the adjacent teeth.
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12. Occlusion of posterior single implant restoration
Under heavy clenching in MIC or CO mode, contact on
the implant and the tooth is similar
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13. Occlusion of posterior single implant restoration
In lateral eccentric movements, the posterior single implant restoration should
not be placed on the loading to reduce the possibility of horizontal force on the
implant.
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14. Occlusion of posterior single implant restoration
In the protrusive movement, the anterior teeth play a guidance role, and the
posterior implant should be completely discluding.
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15. Occlusion of anterior single implant restoration
• Under the light force of the anterior single implant restoration, they should not have any contact.
Under heavy pressure, the contact on the single anterior implant should be similar to the
adjacent tooth. Still, in the eccentric movements, the anterior single implant restoration should
be entirely out of contact.
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16. Occlusion of anterior single implant restoration
• Adjustment of occlusion of a single unit of canine teeth is similar to a single implant of the
anterior teeth. A single canine implant should not use in eccentric movements, except in special
situations such as class 2 patients. Other adjacent teeth should also be used in the anterior
guidance. First, the lateral tooth, and then the detachment is the premolars.
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17. Supported occlusal design with anterior and posterior implants
• Kennedy classification class 4:
• There should be no contact with the implant-supported anterior bridge in MIC, and the posterior
natural teeth should bear the force. If the natural tooth has good support, group function or
canine guidance is suitable. If possible, this restoration should be out of occlusal contact in all
eccentric movements.
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18. Supported occlusal design with anterior and posterior implants
• Kennedy classification class 3:
• There is gentle contact under light force on the implant segment and under heavy pressure on the
implant, and tooth restoration is similar. There should be no contact with the implant restoration
in a protrusive and eccentric movement. And the anterior guidance is created on the natural
tooth.
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19. Supported occlusal design with anterior and posterior implants
• Kennedy classification class 2:
• In the MIC or CO under the implant restoration's gentle contact force so that natural teeth can be
intruded. In heavy occlusion, simultaneous contact between the tooth and the implant must
occur to uniform the force distribution.
• When the posterior restoration is opposite the implant support, there should be no contact under
the gentle force, but in heavy contact force bed on the implant restoration is similar to other
teeth.
• In eccentric movement, Any contact should be avoided
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20. Supported occlusal design with anterior and posterior implants
• Kennedy classification class 1:
• Under low to medium intensity force in MIC, contacts on posterior implants and with mild
intensity on anterior teeth.
• In lateral eccentric movements, the natural anterior teeth should guide and separate the
posterior portion.
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21. Occlusal design in eccentric movement Occlusal design in MIC or CR Clinical status
Bilateral balanced occlusion with
lingualized occlusion (in typical ridges)
In severely resorbed ridge: monoplane
occlusion
Under the gentle and heavy force:
bilateral Uniforms contact
Overdenture
Bilateral balanced :If there is a denture in
front of it
If the front arch is toothed, group function
or mutually protected with a shallow
anterior guide
Absence of worker and non-worker
contacts on the cantilever section
Under the gentle and heavy force:
bilateral Uniforms contact
Full-Arch Fixed Implant-
Supported Prostheses
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