Serveur d'exploration sur le patient édenté

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Immediate function on the day of surgery compared with a delayed implant loading process in the mandible: a randomized clinical trial over 5 years

Identifieur interne : 001976 ( Pmc/Checkpoint ); précédent : 001975; suivant : 001977

Immediate function on the day of surgery compared with a delayed implant loading process in the mandible: a randomized clinical trial over 5 years

Auteurs : Asbjorn Jokstad ; Hassan Alkumru

Source :

RBID : PMC:4278559

Abstract

Objectives

To appraise the feasibility of loading four implants with a pre-existing denture converted to a fixed dental prosthesis (FDP) on the day of implant surgery compared with waiting for 3- to 4-month healing.

Methods

Patients with an edentulous, fully healed mandible were recruited in a faculty clinic to partake in a blinded two-arm parallel randomized controlled trial (RCT). The participants received four parallel intraforamina mandibular implants with a moderately rough titanium surface (Brånemark System Mk III or Mk IV TiUnite; Nobel Biocare AB, Göteborg, Sweden). The implants were loaded on the same day by converting the participants' pre-existing denture in the experimental group. The implants were placed using a one-stage surgery procedure, and the participants' pre-existing denture were soft-relined in the control group. For both groups, the permanent 10- to 12-unit FDP consisting of a type-3 cast precious alloy veneered with acrylic and artificial teeth was placed 3–4 months after implant surgery. All participants have been recalled annually for 5 years for appraisal of bone loss and registration of adverse events.

Results

Thirty-five of the original 42 participants (83%) returned for clinical and radiological examinations at the 5-year follow-up recall. No selective dropout or specific reasons for dropout was identified in the two study arms; leaving n = 17 (Intention-to-treat group, ITT) in the experimental group, alternatively n = 13 as per protocol group (PP), and n = 18 participants in the control group (ITT = PP). At study commencement, five of the participants assigned to the experimental group did not receive their planned intervention. In the control group, one implant failed to osseointegrate and another failed due to bone loss after 5 years. The crestal bone level changes over 5 years were identical in the experimental and control groups, that is, 1.2 mm (SD = 0.7). There were no differences between the two study arms with regard to incidence of biological and technical adverse events.

Conclusions

Implants in the anterior mandible loaded immediately with a converted pre-existing denture appear to yield analogous clinical outcomes compared with waiting for 3–4 months over the first 5 years following implant surgery.


Url:
DOI: 10.1111/clr.12279
PubMed: 24148020
PubMed Central: 4278559


Affiliations:


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PMC:4278559

Le document en format XML

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<p>To appraise the feasibility of loading four implants with a pre-existing denture converted to a fixed dental prosthesis (FDP) on the day of implant surgery compared with waiting for 3- to 4-month healing.</p>
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<title>Methods</title>
<p>Patients with an edentulous, fully healed mandible were recruited in a faculty clinic to partake in a blinded two-arm parallel randomized controlled trial (RCT). The participants received four parallel intraforamina mandibular implants with a moderately rough titanium surface (Brånemark System Mk III or Mk IV TiUnite; Nobel Biocare AB, Göteborg, Sweden). The implants were loaded on the same day by converting the participants' pre-existing denture in the experimental group. The implants were placed using a one-stage surgery procedure, and the participants' pre-existing denture were soft-relined in the control group. For both groups, the permanent 10- to 12-unit FDP consisting of a type-3 cast precious alloy veneered with acrylic and artificial teeth was placed 3–4 months after implant surgery. All participants have been recalled annually for 5 years for appraisal of bone loss and registration of adverse events.</p>
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<p>Thirty-five of the original 42 participants (83%) returned for clinical and radiological examinations at the 5-year follow-up recall. No selective dropout or specific reasons for dropout was identified in the two study arms; leaving
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 = 18 participants in the control group (ITT = PP). At study commencement, five of the participants assigned to the experimental group did not receive their planned intervention. In the control group, one implant failed to osseointegrate and another failed due to bone loss after 5 years. The crestal bone level changes over 5 years were identical in the experimental and control groups, that is, 1.2 mm (SD = 0.7). There were no differences between the two study arms with regard to incidence of biological and technical adverse events.</p>
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<p>Implants in the anterior mandible loaded immediately with a converted pre-existing denture appear to yield analogous clinical outcomes compared with waiting for 3–4 months over the first 5 years following implant surgery.</p>
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<journal-id journal-id-type="nlm-ta">Clin Oral Implants Res</journal-id>
<journal-id journal-id-type="iso-abbrev">Clin Oral Implants Res</journal-id>
<journal-id journal-id-type="publisher-id">clr</journal-id>
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<journal-title>Clinical Oral Implants Research</journal-title>
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<issn pub-type="epub">1600-0501</issn>
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<article-id pub-id-type="pmid">24148020</article-id>
<article-id pub-id-type="pmc">4278559</article-id>
<article-id pub-id-type="doi">10.1111/clr.12279</article-id>
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<article-title>Immediate function on the day of surgery compared with a delayed implant loading process in the mandible: a randomized clinical trial over 5 years</article-title>
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<name>
<surname>Jokstad</surname>
<given-names>Asbjorn</given-names>
</name>
<xref ref-type="aff" rid="au1"></xref>
<xref ref-type="aff" rid="au2"></xref>
<xref ref-type="corresp" rid="cor1"></xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Alkumru</surname>
<given-names>Hassan</given-names>
</name>
<xref ref-type="aff" rid="au1"></xref>
</contrib>
<aff id="au1">
<institution>Faculty of Dentistry, University of Toronto</institution>
<addr-line>Toronto, ON, Canada</addr-line>
</aff>
<aff id="au2">
<institution>Department of Clinical Dentistry, Faculty of Health Sciences, UiT The Arctic University of Norway</institution>
<addr-line>Tromsø, Norway</addr-line>
</aff>
</contrib-group>
<author-notes>
<corresp id="cor1">
<bold>Corresponding author:</bold>
,
<italic>Asbjorn Jokstad</italic>
, DDS, PhD, Faculty of Dentistry, University of Toronto, 124 Edward Street, Toronto, ON M5G 1G6, Canada, Tel.: +1 416 979 4930, ext 4427, Fax: +1 416 979 4769, e-mail:
<email>a.jokstad@dentistry.utoronto.ca</email>
</corresp>
<fn>
<p>
<bold>To cite this article:</bold>
Jokstad A, Alkumru H. Immediate function on the day of surgery compared with a delayed implant loading process in the mandible: a randomized clinical trial over 5 years.</p>
</fn>
</author-notes>
<pub-date pub-type="ppub">
<month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>23</day>
<month>10</month>
<year>2013</year>
</pub-date>
<volume>25</volume>
<issue>12</issue>
<fpage>1325</fpage>
<lpage>1335</lpage>
<history>
<date date-type="accepted">
<day>09</day>
<month>9</month>
<year>2013</year>
</date>
</history>
<permissions>
<copyright-statement>© 2013 The Authors. Clinical Oral Implants Research published by John Wiley & Sons Ltd.</copyright-statement>
<copyright-year>2013</copyright-year>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/3.0/">
<license-p>This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.</license-p>
</license>
</permissions>
<abstract>
<sec>
<title>Objectives</title>
<p>To appraise the feasibility of loading four implants with a pre-existing denture converted to a fixed dental prosthesis (FDP) on the day of implant surgery compared with waiting for 3- to 4-month healing.</p>
</sec>
<sec>
<title>Methods</title>
<p>Patients with an edentulous, fully healed mandible were recruited in a faculty clinic to partake in a blinded two-arm parallel randomized controlled trial (RCT). The participants received four parallel intraforamina mandibular implants with a moderately rough titanium surface (Brånemark System Mk III or Mk IV TiUnite; Nobel Biocare AB, Göteborg, Sweden). The implants were loaded on the same day by converting the participants' pre-existing denture in the experimental group. The implants were placed using a one-stage surgery procedure, and the participants' pre-existing denture were soft-relined in the control group. For both groups, the permanent 10- to 12-unit FDP consisting of a type-3 cast precious alloy veneered with acrylic and artificial teeth was placed 3–4 months after implant surgery. All participants have been recalled annually for 5 years for appraisal of bone loss and registration of adverse events.</p>
</sec>
<sec>
<title>Results</title>
<p>Thirty-five of the original 42 participants (83%) returned for clinical and radiological examinations at the 5-year follow-up recall. No selective dropout or specific reasons for dropout was identified in the two study arms; leaving
<italic>n</italic>
 = 17 (
<italic>Intention-to-treat group</italic>
, ITT) in the experimental group, alternatively
<italic>n</italic>
 = 13 as
<italic>per protocol group</italic>
(PP), and
<italic>n</italic>
 = 18 participants in the control group (ITT = PP). At study commencement, five of the participants assigned to the experimental group did not receive their planned intervention. In the control group, one implant failed to osseointegrate and another failed due to bone loss after 5 years. The crestal bone level changes over 5 years were identical in the experimental and control groups, that is, 1.2 mm (SD = 0.7). There were no differences between the two study arms with regard to incidence of biological and technical adverse events.</p>
</sec>
<sec>
<title>Conclusions</title>
<p>Implants in the anterior mandible loaded immediately with a converted pre-existing denture appear to yield analogous clinical outcomes compared with waiting for 3–4 months over the first 5 years following implant surgery.</p>
</sec>
</abstract>
<kwd-group>
<kwd>alveolar bone loss</kwd>
<kwd>cantilever units</kwd>
<kwd>dental implants</kwd>
<kwd>fixed prosthesis</kwd>
<kwd>marginal bone level</kwd>
<kwd>radiographic evaluation</kwd>
<kwd>randomized clinical trial</kwd>
</kwd-group>
</article-meta>
</front>
</pmc>
<affiliations>
<list></list>
<tree>
<noCountry>
<name sortKey="Alkumru, Hassan" sort="Alkumru, Hassan" uniqKey="Alkumru H" first="Hassan" last="Alkumru">Hassan Alkumru</name>
<name sortKey="Jokstad, Asbjorn" sort="Jokstad, Asbjorn" uniqKey="Jokstad A" first="Asbjorn" last="Jokstad">Asbjorn Jokstad</name>
</noCountry>
</tree>
</affiliations>
</record>

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