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Analytical and experimental position stability of the abutment in different dental implant systems with a conical implant–abutment connection

Identifieur interne : 000C34 ( Pmc/Curation ); précédent : 000C33; suivant : 000C35

Analytical and experimental position stability of the abutment in different dental implant systems with a conical implant–abutment connection

Auteurs : Wiebke Semper-Hogg [Allemagne] ; Silvan Kraft [Allemagne] ; Sebastian Stiller [Allemagne] ; Juergen Mehrhof [Allemagne] ; Katja Nelson [Allemagne]

Source :

RBID : PMC:3607726

Abstract

Objectives

Position stability of the abutment should be investigated in four implant systems with a conical implant–abutment connection.

Materials and methods

Previously developed formulas and an established experimental setup were used to determine the position stability of the abutment in the four implant systems with a conical implant–abutment connection and different positional index designs: The theoretical rotational freedom was calculated by using the dimensions of one randomly selected implant per system for approximated geometric models. Experimentally, the rotation, the vertical displacement, and canting moments of the abutment after multiple repositioning and hand tightening of the abutment screw were investigated.

Results

The experimental rotation and vertical displacement differed between the implant systems tested. The analytical and experimental results for the rotation of the abutment clearly deviated in the three implant systems.

Conclusions

Malpositioning of the abutment was possible in all the implant systems tested. Deviating theoretical and experimental results suggest high manufacturing tolerances during fabrication of the implant components.

Clinical relevance

Position stability of the abutment is essential for precisely fitting implant-supported superstructures.


Url:
DOI: 10.1007/s00784-012-0786-1
PubMed: 22821447
PubMed Central: 3607726

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PMC:3607726

Le document en format XML

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<p>Position stability of the abutment should be investigated in four implant systems with a conical implant–abutment connection.</p>
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<title>Materials and methods</title>
<p>Previously developed formulas and an established experimental setup were used to determine the position stability of the abutment in the four implant systems with a conical implant–abutment connection and different positional index designs: The theoretical rotational freedom was calculated by using the dimensions of one randomly selected implant per system for approximated geometric models. Experimentally, the rotation, the vertical displacement, and canting moments of the abutment after multiple repositioning and hand tightening of the abutment screw were investigated.</p>
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<p>Malpositioning of the abutment was possible in all the implant systems tested. Deviating theoretical and experimental results suggest high manufacturing tolerances during fabrication of the implant components.</p>
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<p>Position stability of the abutment is essential for precisely fitting implant-supported superstructures.</p>
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<article-title>Analytical and experimental position stability of the abutment in different dental implant systems with a conical implant–abutment connection</article-title>
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<surname>Semper-Hogg</surname>
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<contrib contrib-type="author">
<name>
<surname>Mehrhof</surname>
<given-names>Juergen</given-names>
</name>
<xref ref-type="aff" rid="Aff3"></xref>
</contrib>
<contrib contrib-type="author" corresp="yes">
<name>
<surname>Nelson</surname>
<given-names>Katja</given-names>
</name>
<address>
<phone>+49-761-27047790</phone>
<fax>+49-761-27047610</fax>
<email>katja.nelson@uniklinik-freiburg.de</email>
</address>
<xref ref-type="aff" rid="Aff1"></xref>
</contrib>
<aff id="Aff1">
<label></label>
Department of Oral and Maxillofacial Surgery, University Hospital Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany</aff>
<aff id="Aff2">
<label></label>
Department of Radiology, Technical University Munich, Ismaninger Str. 22, 81675 München, Germany</aff>
<aff id="Aff3">
<label></label>
Zahntechnik Mehrhof GmbH, Reuchlin Str. 10-11, 10553 Berlin, Germany</aff>
</contrib-group>
<pub-date pub-type="epub">
<day>22</day>
<month>7</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="pmc-release">
<day>22</day>
<month>7</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="ppub">
<month>4</month>
<year>2013</year>
</pub-date>
<volume>17</volume>
<issue>3</issue>
<fpage>1017</fpage>
<lpage>1023</lpage>
<history>
<date date-type="received">
<day>25</day>
<month>1</month>
<year>2012</year>
</date>
<date date-type="accepted">
<day>13</day>
<month>6</month>
<year>2012</year>
</date>
</history>
<permissions>
<copyright-statement>© The Author(s) 2012</copyright-statement>
</permissions>
<abstract id="Abs1">
<sec>
<title>Objectives</title>
<p>Position stability of the abutment should be investigated in four implant systems with a conical implant–abutment connection.</p>
</sec>
<sec>
<title>Materials and methods</title>
<p>Previously developed formulas and an established experimental setup were used to determine the position stability of the abutment in the four implant systems with a conical implant–abutment connection and different positional index designs: The theoretical rotational freedom was calculated by using the dimensions of one randomly selected implant per system for approximated geometric models. Experimentally, the rotation, the vertical displacement, and canting moments of the abutment after multiple repositioning and hand tightening of the abutment screw were investigated.</p>
</sec>
<sec>
<title>Results</title>
<p>The experimental rotation and vertical displacement differed between the implant systems tested. The analytical and experimental results for the rotation of the abutment clearly deviated in the three implant systems.</p>
</sec>
<sec>
<title>Conclusions</title>
<p>Malpositioning of the abutment was possible in all the implant systems tested. Deviating theoretical and experimental results suggest high manufacturing tolerances during fabrication of the implant components.</p>
</sec>
<sec>
<title>Clinical relevance</title>
<p>Position stability of the abutment is essential for precisely fitting implant-supported superstructures.</p>
</sec>
</abstract>
<kwd-group xml:lang="en">
<title>Keywords</title>
<kwd>Rotational freedom</kwd>
<kwd>Vertical displacement</kwd>
<kwd>Conical</kwd>
<kwd>Positional index</kwd>
<kwd>Hexagon</kwd>
<kwd>Cam–groove design</kwd>
</kwd-group>
<custom-meta-group>
<custom-meta>
<meta-name>issue-copyright-statement</meta-name>
<meta-value>© Springer-Verlag Berlin Heidelberg 2013</meta-value>
</custom-meta>
</custom-meta-group>
</article-meta>
</front>
</pmc>
</record>

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