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Rehabilitation of resorbed mandibular ridges using mini implant retained overdentures: A case series with 3 year follow-up

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ABSTRACT

With the increasing average life expectancy of human beings, the need to cater geriatric patients is ever increasing. Complete dentures are an indispensable tool in this regard. The loose and unstable lower complete denture owing to residual ridge resorption is one of the most common problems faced by edentulous patients. Dental implant retained overdentures have emerged as an efficient treatment modality for such patients. Though useful, not every patient is a suitable candidate to go for conventional implant-borne prosthesis, limitation being the available bone width. In such cases, mini implants may be used for augmenting the retention of the dentures and improving the quality of life of patients. In this case series, rehabilitation of three compromised cases with mini implant retained overdentures have been described wherein patients are experiencing instability of lower denture due to thin resorbed mandibular ridges. In one of the cases, three mini implants placed in A, C, and E position were splinted using a cemented bar to retain the mandibular denture. The other two cases were rehabilitated using unsplinted ball type one piece mini implants placed in A, C, and E position in one case and B and D position in another case. Though splinted bar design should be preferred but the lack of available vertical space precluded the utilization of bar in other two cases. The results were found to be satisfactory with no complications reported during a follow-up period of over 3 years in all the cases.

No MeSH data available.


Orthopantomogram showing maintenance of marginal bone level around the splinted mini implants after 3 years of placement
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Figure 7: Orthopantomogram showing maintenance of marginal bone level around the splinted mini implants after 3 years of placement

Mentions: There may be certain physiologic advantages of mini implants over wider implants. Due to very small osteotomy prepared, the blood supply at the osseous crest is not remarkably compromised as it happens with the larger implant causing the characteristic resorption to the first thread phenomenon seen with them. This phenomenon does not seem to be prevalent with the narrow diameter implants.[78] Also mini implant retained overdentures are naturally subjected to immediate gradual bone loading due to one piece nature of the implant and abutment. According to Wolff's Law, gradual bone loading is associated with superior bone healing.[910] In the presented cases, bone loss around the implants as evident from the orthopantomograph were found to be almost negligible, as seen in the orthopantomogram made after 3 years of placement in the patient restored with splinted bar retained prosthesis [Figure 7]. Also the survival rate of small-diameter implants appears to be similar to that of regular diameter implants.[11]


Rehabilitation of resorbed mandibular ridges using mini implant retained overdentures: A case series with 3 year follow-up
Orthopantomogram showing maintenance of marginal bone level around the splinted mini implants after 3 years of placement
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4837782&req=5

Figure 7: Orthopantomogram showing maintenance of marginal bone level around the splinted mini implants after 3 years of placement
Mentions: There may be certain physiologic advantages of mini implants over wider implants. Due to very small osteotomy prepared, the blood supply at the osseous crest is not remarkably compromised as it happens with the larger implant causing the characteristic resorption to the first thread phenomenon seen with them. This phenomenon does not seem to be prevalent with the narrow diameter implants.[78] Also mini implant retained overdentures are naturally subjected to immediate gradual bone loading due to one piece nature of the implant and abutment. According to Wolff's Law, gradual bone loading is associated with superior bone healing.[910] In the presented cases, bone loss around the implants as evident from the orthopantomograph were found to be almost negligible, as seen in the orthopantomogram made after 3 years of placement in the patient restored with splinted bar retained prosthesis [Figure 7]. Also the survival rate of small-diameter implants appears to be similar to that of regular diameter implants.[11]

View Article: PubMed Central - PubMed

ABSTRACT

With the increasing average life expectancy of human beings, the need to cater geriatric patients is ever increasing. Complete dentures are an indispensable tool in this regard. The loose and unstable lower complete denture owing to residual ridge resorption is one of the most common problems faced by edentulous patients. Dental implant retained overdentures have emerged as an efficient treatment modality for such patients. Though useful, not every patient is a suitable candidate to go for conventional implant-borne prosthesis, limitation being the available bone width. In such cases, mini implants may be used for augmenting the retention of the dentures and improving the quality of life of patients. In this case series, rehabilitation of three compromised cases with mini implant retained overdentures have been described wherein patients are experiencing instability of lower denture due to thin resorbed mandibular ridges. In one of the cases, three mini implants placed in A, C, and E position were splinted using a cemented bar to retain the mandibular denture. The other two cases were rehabilitated using unsplinted ball type one piece mini implants placed in A, C, and E position in one case and B and D position in another case. Though splinted bar design should be preferred but the lack of available vertical space precluded the utilization of bar in other two cases. The results were found to be satisfactory with no complications reported during a follow-up period of over 3 years in all the cases.

No MeSH data available.