All-on-4
‘All-On-4’ is an advanced technique whereby a whole arch of teeth is supported by only 4 implants. Its success rates are similar to those of traditional implant techniques but it differs in that the back implants are deliberately tilted towards the back of the mouth. For the vast majority of patients all-on-4 overcomes several of the problems associated with previous techniques.
- Load distribution is maximized. A functional arch of teeth can be supported by a reduced number of implants.
- Bone deficiencies at the back of the jaw are avoided. Complex grafting procedures and extended healing times are no longer necessary.
- The replacement teeth can be placed immediately (within one to three days of implant placement). Immediate oral rehabilitation is now possible without patients having to go through an intermediate removable denture phase.
- Using only 4 implants means reduced initial cost, reduced surgical complexity and long term, easier cleaning and maintenance.
Patients who are not suitable for all-on-4 are generally those with a very heavy bite or with insufficient bone. These patients can still often be treated in the conventional manner using 6 or more implants, generally with grafting. Zygomatic implants are also available where bone is minimal.
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all-on-4 upper and lower implants |  |
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Before treatment Adrian had constant problems with his teeth requiring frequent repair work. |  |
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After treatment with an all-on-4 lower implant bridge and an upper full denture his facial appearance dramatically improved and he could speak and chew with confidence. |  |
who is suitable?
All-on-4 can be used for patients who have already lost or are about to lose all their upper or lower teeth. Generally, any tooth extractions are done on the same day as the implants are placed.
You can obtain more information by emailing us at
AO4@prosthodontic.com