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Comparative evaluation of bone in mandibular implant retained overdentures using delayed and immediate loading protocol: an in-vivo study.

Identifieur interne : 000A05 ( PubMed/Curation ); précédent : 000A04; suivant : 000A06

Comparative evaluation of bone in mandibular implant retained overdentures using delayed and immediate loading protocol: an in-vivo study.

Auteurs : Manesh Lahori [Inde] ; A S Kaul [Inde] ; Sidhartha Chandra [Inde] ; Rahul Nagrath [Inde] ; Himanshu Gupta [Inde]

Source :

RBID : pubmed:24431720

Abstract

The aim of the present study was to evaluate the changes in periimplant bone quality, crestal bone level and the implant stability (periotest) for mandibular implant retained overdentures with ball attachments using delayed and immediate loading protocols. Ten completely edentulous patients had two alpha bio dental implants placed in the anterior part of the mandible. The loading protocols for the patients was chosen randomly by drawing lots. Five patients were loaded under immediate loading protocols and other five following delayed. Crestal bone loss and bone quality were assessed around each implant. Periotest values were recorded for each implant at 3, 6 and 12 months after loading. Two implants were lost and were excluded from the study. However mean crestal bone loss around implants was 0.81 mm from the time of prosthetic loading to 12 months after prosthetic loading was seen and no significant result was found between the two groups for the crestal bone loss and the periotest values. Though the periotest value decreased (indicates increased stability) over the time period. The bone density changes were significant for both the groups at coronal level at all time intervals but at middle level significant only after 12 months of prosthetic loading, although individual variation was high. This study concluded that the changes in crestal bone level and periotest values were insignificant for the two groups. But the implant stability increased over the time and the crestal bone loss was evident with decreased rate over the period of time. There was wide individual variation for the bone density changes but overall increase in the density was seen.

DOI: 10.1007/s13191-012-0240-8
PubMed: 24431720

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<div type="abstract" xml:lang="en">The aim of the present study was to evaluate the changes in periimplant bone quality, crestal bone level and the implant stability (periotest) for mandibular implant retained overdentures with ball attachments using delayed and immediate loading protocols. Ten completely edentulous patients had two alpha bio dental implants placed in the anterior part of the mandible. The loading protocols for the patients was chosen randomly by drawing lots. Five patients were loaded under immediate loading protocols and other five following delayed. Crestal bone loss and bone quality were assessed around each implant. Periotest values were recorded for each implant at 3, 6 and 12 months after loading. Two implants were lost and were excluded from the study. However mean crestal bone loss around implants was 0.81 mm from the time of prosthetic loading to 12 months after prosthetic loading was seen and no significant result was found between the two groups for the crestal bone loss and the periotest values. Though the periotest value decreased (indicates increased stability) over the time period. The bone density changes were significant for both the groups at coronal level at all time intervals but at middle level significant only after 12 months of prosthetic loading, although individual variation was high. This study concluded that the changes in crestal bone level and periotest values were insignificant for the two groups. But the implant stability increased over the time and the crestal bone loss was evident with decreased rate over the period of time. There was wide individual variation for the bone density changes but overall increase in the density was seen.</div>
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<CommentsCorrectionsList>
<CommentsCorrections RefType="Cites">
<RefSource>Clin Oral Investig. 1997 Jun;1(2):81-8</RefSource>
<PMID Version="1">9552823</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Clin Oral Implants Res. 2002 Dec;13(6):603-9</RefSource>
<PMID Version="1">12519334</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>J Prosthet Dent. 1993 Mar;69(3):276-80</RefSource>
<PMID Version="1">8445558</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Clin Implant Dent Relat Res. 2001;3(4):185-93</RefSource>
<PMID Version="1">11887655</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Int J Oral Maxillofac Implants. 2001 Jul-Aug;16(4):537-46</RefSource>
<PMID Version="1">11516001</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>J Oral Rehabil. 1995 Aug;22(8):661-71</RefSource>
<PMID Version="1">7472740</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Int J Prosthodont. 2005 Nov-Dec;18(6):463-70</RefSource>
<PMID Version="1">16335163</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Int J Prosthodont. 1998 Sep-Oct;11(5):491-501</RefSource>
<PMID Version="1">9922740</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Int J Oral Maxillofac Implants. 2010 Sep-Oct;25(5):1028-35</RefSource>
<PMID Version="1">20862419</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Clin Oral Implants Res. 2002 Aug;13(4):371-80</RefSource>
<PMID Version="1">12175374</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Int J Oral Maxillofac Implants. 2007 Sep-Oct;22(5):743-54</RefSource>
<PMID Version="1">17974108</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Int J Oral Maxillofac Implants. 1998 Jul-Aug;13(4):539-45</RefSource>
<PMID Version="1">9714961</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>J Prosthet Dent. 2007 Jun;97(6 Suppl):S126-37</RefSource>
<PMID Version="1">17618927</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>Clin Radiol. 2001 Sep;56(9):700-13</RefSource>
<PMID Version="1">11585392</PMID>
</CommentsCorrections>
<CommentsCorrections RefType="Cites">
<RefSource>J Prosthet Dent. 2002 Feb;87(2):173-81</RefSource>
<PMID Version="1">11854674</PMID>
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