EdenteV2, Istex, Corpus, bibRecord, 002141

A retrospective analysis of factors associated with multiple implant failures in maxillae

Identifieur interne : 002141 ( Istex/Corpus ); précédent : 002140; suivant : 002142

A retrospective analysis of factors associated with multiple implant failures in maxillae

Auteurs : A. Ekfeldt ; L. Johansson ; U. Christiansson ; T. Eriksson ; U. Lindén ; S. Lundqvist ; T. Rundcrantz ; K. Nilner ; C. Billström

Source :

Clinical Oral Implants Research [ 0905-7161 ] ; 2001-10.

RBID : ISTEX:44101734081B57AC371C45B6971DCAFD75EB414C

English descriptors

Abstract

Abstract: This retrospective study was designed to verify the factors that influence implant failures. Six prosthodontic clinics in Sweden participated in the study, and together they included a total of 54 patients treated between January 1988 and December 1996. All patients were completely edentulous in the maxilla, and received either a fixed prosthesis or an overdenture supported by at least 4 implants (Brånemark System®). Half of the patients belonged to the study group, and an inclusion criterion for this group was that they had lost at least half of their implants. To reduce bias, the patients in the control group were matched to the study group, i.e. they were selected so that both groups were as identical as possible. The results of the study indicate that the control group had a better initial bone support than the study group. Furthermore, the patients in the study group suffered from circumstances that could induce implant failure, such as bruxism, personal grief, depression, as well as addictions to cigarettes, alcohol and/or narcotics. On the study form the clinicians were asked to give their own opinion of the reason for implant failure. The answers given could easily be grouped into 5 different topics, and this experience can be useful to improve patient selection. This study suggests that there are certain factors of importance to consider to prevent a cluster phenomenon of implant failures i.e. lack of bone support, heavy smoking habits and bruxism.

Url:

https://api.istex.fr/document/44101734081B57AC371C45B6971DCAFD75EB414C/fulltext/pdf

DOI: 10.1034/j.1600-0501.2001.120505.x

Links to Exploration step

ISTEX:44101734081B57AC371C45B6971DCAFD75EB414C

Le document en format XML

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<front><div type="abstract">Abstract: This retrospective study was designed to verify the factors that influence implant failures. Six prosthodontic clinics in Sweden participated in the study, and together they included a total of 54 patients treated between January 1988 and December 1996. All patients were completely edentulous in the maxilla, and received either a fixed prosthesis or an overdenture supported by at least 4 implants (Brånemark System®). Half of the patients belonged to the study group, and an inclusion criterion for this group was that they had lost at least half of their implants. To reduce bias, the patients in the control group were matched to the study group, i.e. they were selected so that both groups were as identical as possible. The results of the study indicate that the control group had a better initial bone support than the study group. Furthermore, the patients in the study group suffered from circumstances that could induce implant failure, such as bruxism, personal grief, depression, as well as addictions to cigarettes, alcohol and/or narcotics. On the study form the clinicians were asked to give their own opinion of the reason for implant failure. The answers given could easily be grouped into 5 different topics, and this experience can be useful to improve patient selection. This study suggests that there are certain factors of importance to consider to prevent a cluster phenomenon of implant failures i.e. lack of bone support, heavy smoking habits and bruxism.</div>
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<affiliation>Department of Prosthetic Dentistry, Center of Medical and Oral Health, Halmstad.</affiliation>
<affiliation> *Anders Ekfeldt, Mun‐H‐center Odontologen Göteborg Medicinaregatan 12 A 413 90 Göteborg Sweden Tel: +46 31 773 38 20 Fax: +46 31 773 38 19 e‐mail: anders.ekfeldt@vgregion.se</affiliation>
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<author xml:id="author-0002"><persName><forename type="first">U.</forename>
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<author xml:id="author-0003"><persName><forename type="first">T.</forename>
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<affiliation>Department of Prosthetic Dentistry, Public Dental Service of Blekinge, Lyckeby.</affiliation>
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<profileDesc><abstract xml:lang="en" style="main"><p><hi rend="bold">Abstract:</hi>
 This retrospective study was designed to verify the factors that influence implant failures. Six prosthodontic clinics in Sweden participated in the study, and together they included a total of 54 patients treated between January 1988 and December 1996. All patients were completely edentulous in the maxilla, and received either a fixed prosthesis or an overdenture supported by at least 4 implants (Brånemark System<hi rend="superscript">®</hi>
). Half of the patients belonged to the study group, and an inclusion criterion for this group was that they had lost at least half of their implants. To reduce bias, the patients in the control group were matched to the study group, i.e. they were selected so that both groups were as identical as possible. The results of the study indicate that the control group had a better initial bone support than the study group. Furthermore, the patients in the study group suffered from circumstances that could induce implant failure, such as bruxism, personal grief, depression, as well as addictions to cigarettes, alcohol and/or narcotics. On the study form the clinicians were asked to give their own opinion of the reason for implant failure. The answers given could easily be grouped into 5 different topics, and this experience can be useful to improve patient selection. This study suggests that there are certain factors of importance to consider to prevent a cluster phenomenon of implant failures i.e. lack of bone support, heavy smoking habits and bruxism.</p>
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<abstract xml:lang="fr" style="main"><head>Résumé</head>
<p>Cette étude rétrospective a été planifiée pour étudier les facteurs influençant les éches implantaires. Six cliniques de prothèse en Suède ont participéà cette étude apportant un total de 54 patients traités entre janvier 1988 et décembre 1996. Tous ces patients étaient édentés supérieurs et ont reçu soit une prothèse fixe soit une prothèse amovible fixée à au moins quatre implants <hi rend="italic">ad modum</hi>
 Brånemark<hi rend="superscript">®</hi>
. La moitié des patients étaient du groupe d’étude et un critère d’inclusion pour ce groupe était qu’ils avaient perdu au moins la moitié de leur implants. Afin de diminuer les données biaisées les patients du groupe contrôle étaient comparables à ceux du groupe d’étude c.‐à.‐d. qu’ils étaient sélectionnés pour que les deux groupes soient aussi semblables que possible. Les résultats de cette étude ont indiqué que le groupe contrôle avait un meilleur support osseux initial que le test. De plus les patients du groupe test souffraient des circonstances qui pouvaient induire l’échec implantaire comme le bruxisme, des problèmes personnels, la dépression ainsi que l’abus de cigarettes, d’alcool et/ou de narcotiques. Sur le questionnaire clinique, les cliniciens ont dû donné leur opinion sur la cause de l’échec implantaire. Les réponses pouvaient facilement être groupées en cinq raisons différentes et cette expérience peut donc être utile pour améliorer la sélection des patients. Cette étude suggère qu’il y a certains facteurs d’importance à considérer pour prévenir les phénomènes d’échecs implantaires de masse soit l’absence du support osseux, le tabagisme important et le bruxisme.</p>
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<abstract xml:lang="de" style="main"><head>Zusammenfassung</head>
<p>Diese retrospective Studie wurde entworfen, um Faktoren, welche Implantatmisserfolge beeinflussen, zu identifizieren. Sechs prothetische Kliniken in Schweden nahmen an der Studie teil. Insgesamt konnten 54 Patienten, welche zwischen Januar 1988 und Dezember 1996 versorgt worden waren, in die Untersuchung einbezogen werden. Alle Patienten waren im Oberkiefer zahnlos und erhielten entweder eine festsitzende Brückenrekonstruktion oder eine Hybridprothese, welche auf mindestens 4 Implantaten (Brånemark‐System<hi rend="superscript">®</hi>
) verankert wurde. Die Hälfte der Patienten gehörte zur Untersuchungsgruppe. Ein Einschlusskriterium für diese Gruppe war, dass die Probanden mindestens die Hälfte ihrer Implantate verloren hatten. Um Vorurteile zu vermeiden, wurden die Patienten der Kontrollgruppe einem entsprechenden Patienten der Testgruppe zugeordnet, d.h. sie wurden so ausgewählt, dass die beiden Gruppen so identisch wie möglich waren. Die Resultate der Studie zeigten, dass die Kontrollgruppe initial ein besseres Knochenangebot als Testgruppe aufwies. Des weiteren bestanden bei den Patienten der Untersuchungsgruppe Umstände wie etwa Bruxismus, persönlicher Kummer, Depressionen und auch Konsum von Zigaretten, Alkohol und/oder Beruhigungsmitteln, welche Implantatmisserfolge induzieren können. Auf dem Untersuchungsblatt wurden die Kliniker nach ihrer Meinung bezüglich der Ursache der Implantatmisserfolge gefragt. Die Antworten konnten leicht in 5 verschiedene Gebiete eingeteilt werden. Diese Erfahrungen können hilfreich bei der Patientenauswahl sein. Die Ergebnisse dieser Studie lassen vermuten, dass gewisse wichtige Faktoren wie z.B. mangelndes Knochenangebot, starkes Rauchen und Bruxismus existieren, welche in Betracht gezogen werden müssen, um einer Anhäufung von Implantatmisserfolg vorzubeugen.</p>
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<abstract xml:lang="es" style="main"><head>Resumen</head>
<p>Este estudio retrospectivo se diseñó para verificar los factores que influyen en los fracasos de los implantes. Seis clínicas de prótesis en Suecia participaron en el estudio, y en conjunto incluyeron un total de 54 pacientes tratados entre enero de 1988 y diciembre de 1996. Todos los pacientes estaban completamente edéntulos en el maxilar, y recibieron una prótesis fija o una sobredentadura soportada por al menos 4 implantes (Sisterma Brånemark<hi rend="superscript">®</hi>
). La mitad de los pacientes pertenecían al grupo de estudio, y el criterio para inclusión en este grupo fue que habían perdido al menos la mitad de sus implantes. Para reducir la tendencia, los pacientes en el grupo de control se equipararon al grupo de estudio, esto es, se seleccionaron de tal manera que los dos grupos fueran lo más idénticos posible. Los resultados del estudio indican que el grupo de control tuvo un mejor soporte óseo inicial que el grupo de estudio. Mas aun, los pacientes del grupo de estudio sufrieron circunstancias que pudieron inducir el fracaso de los implantes, tales como bruxismo, percances personales, depresiones, además de adicción a los cigarrillos, alcohol y/o narcóticos. En el formulario de estudio se les preguntó a los clínicos su propia opinión de la razón del fracaso del implante. Las resupestas dadas pueden ser agrupadas en 5 tópicos diferentes, y esta experiencia puede ser útil para mejorar la selección de pacientes. Este estudio sugiere que hay ciertos factores de importancia a considerar para prevenir un fenómeno en racimo de fracaso de implantes, esto es, falta de soporte óseo, tabaquismo intenso y bruxismo.</p>
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<abstractGroup><abstract type="main" xml:lang="en"><p><b>Abstract:</b>
 This retrospective study was designed to verify the factors that influence implant failures. Six prosthodontic clinics in Sweden participated in the study, and together they included a total of 54 patients treated between January 1988 and December 1996. All patients were completely edentulous in the maxilla, and received either a fixed prosthesis or an overdenture supported by at least 4 implants (Brånemark System<sup>®</sup>
). Half of the patients belonged to the study group, and an inclusion criterion for this group was that they had lost at least half of their implants. To reduce bias, the patients in the control group were matched to the study group, i.e. they were selected so that both groups were as identical as possible. The results of the study indicate that the control group had a better initial bone support than the study group. Furthermore, the patients in the study group suffered from circumstances that could induce implant failure, such as bruxism, personal grief, depression, as well as addictions to cigarettes, alcohol and/or narcotics. On the study form the clinicians were asked to give their own opinion of the reason for implant failure. The answers given could easily be grouped into 5 different topics, and this experience can be useful to improve patient selection. This study suggests that there are certain factors of importance to consider to prevent a cluster phenomenon of implant failures i.e. lack of bone support, heavy smoking habits and bruxism.</p>
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<abstract type="main" xml:lang="fr"><title type="main">Résumé</title>
<p>Cette étude rétrospective a été planifiée pour étudier les facteurs influençant les éches implantaires. Six cliniques de prothèse en Suède ont participéà cette étude apportant un total de 54 patients traités entre janvier 1988 et décembre 1996. Tous ces patients étaient édentés supérieurs et ont reçu soit une prothèse fixe soit une prothèse amovible fixée à au moins quatre implants <i>ad modum</i>
 Brånemark<sup>®</sup>
. La moitié des patients étaient du groupe d’étude et un critère d’inclusion pour ce groupe était qu’ils avaient perdu au moins la moitié de leur implants. Afin de diminuer les données biaisées les patients du groupe contrôle étaient comparables à ceux du groupe d’étude c.‐à.‐d. qu’ils étaient sélectionnés pour que les deux groupes soient aussi semblables que possible. Les résultats de cette étude ont indiqué que le groupe contrôle avait un meilleur support osseux initial que le test. De plus les patients du groupe test souffraient des circonstances qui pouvaient induire l’échec implantaire comme le bruxisme, des problèmes personnels, la dépression ainsi que l’abus de cigarettes, d’alcool et/ou de narcotiques. Sur le questionnaire clinique, les cliniciens ont dû donné leur opinion sur la cause de l’échec implantaire. Les réponses pouvaient facilement être groupées en cinq raisons différentes et cette expérience peut donc être utile pour améliorer la sélection des patients. Cette étude suggère qu’il y a certains facteurs d’importance à considérer pour prévenir les phénomènes d’échecs implantaires de masse soit l’absence du support osseux, le tabagisme important et le bruxisme.</p>
</abstract>
<abstract type="main" xml:lang="de"><title type="main">Zusammenfassung</title>
<p>Diese retrospective Studie wurde entworfen, um Faktoren, welche Implantatmisserfolge beeinflussen, zu identifizieren. Sechs prothetische Kliniken in Schweden nahmen an der Studie teil. Insgesamt konnten 54 Patienten, welche zwischen Januar 1988 und Dezember 1996 versorgt worden waren, in die Untersuchung einbezogen werden. Alle Patienten waren im Oberkiefer zahnlos und erhielten entweder eine festsitzende Brückenrekonstruktion oder eine Hybridprothese, welche auf mindestens 4 Implantaten (Brånemark‐System<sup>®</sup>
) verankert wurde. Die Hälfte der Patienten gehörte zur Untersuchungsgruppe. Ein Einschlusskriterium für diese Gruppe war, dass die Probanden mindestens die Hälfte ihrer Implantate verloren hatten. Um Vorurteile zu vermeiden, wurden die Patienten der Kontrollgruppe einem entsprechenden Patienten der Testgruppe zugeordnet, d.h. sie wurden so ausgewählt, dass die beiden Gruppen so identisch wie möglich waren. Die Resultate der Studie zeigten, dass die Kontrollgruppe initial ein besseres Knochenangebot als Testgruppe aufwies. Des weiteren bestanden bei den Patienten der Untersuchungsgruppe Umstände wie etwa Bruxismus, persönlicher Kummer, Depressionen und auch Konsum von Zigaretten, Alkohol und/oder Beruhigungsmitteln, welche Implantatmisserfolge induzieren können. Auf dem Untersuchungsblatt wurden die Kliniker nach ihrer Meinung bezüglich der Ursache der Implantatmisserfolge gefragt. Die Antworten konnten leicht in 5 verschiedene Gebiete eingeteilt werden. Diese Erfahrungen können hilfreich bei der Patientenauswahl sein. Die Ergebnisse dieser Studie lassen vermuten, dass gewisse wichtige Faktoren wie z.B. mangelndes Knochenangebot, starkes Rauchen und Bruxismus existieren, welche in Betracht gezogen werden müssen, um einer Anhäufung von Implantatmisserfolg vorzubeugen.</p>
</abstract>
<abstract type="main" xml:lang="es"><title type="main">Resumen</title>
<p>Este estudio retrospectivo se diseñó para verificar los factores que influyen en los fracasos de los implantes. Seis clínicas de prótesis en Suecia participaron en el estudio, y en conjunto incluyeron un total de 54 pacientes tratados entre enero de 1988 y diciembre de 1996. Todos los pacientes estaban completamente edéntulos en el maxilar, y recibieron una prótesis fija o una sobredentadura soportada por al menos 4 implantes (Sisterma Brånemark<sup>®</sup>
). La mitad de los pacientes pertenecían al grupo de estudio, y el criterio para inclusión en este grupo fue que habían perdido al menos la mitad de sus implantes. Para reducir la tendencia, los pacientes en el grupo de control se equipararon al grupo de estudio, esto es, se seleccionaron de tal manera que los dos grupos fueran lo más idénticos posible. Los resultados del estudio indican que el grupo de control tuvo un mejor soporte óseo inicial que el grupo de estudio. Mas aun, los pacientes del grupo de estudio sufrieron circunstancias que pudieron inducir el fracaso de los implantes, tales como bruxismo, percances personales, depresiones, además de adicción a los cigarrillos, alcohol y/o narcóticos. En el formulario de estudio se les preguntó a los clínicos su propia opinión de la razón del fracaso del implante. Las resupestas dadas pueden ser agrupadas en 5 tópicos diferentes, y esta experiencia puede ser útil para mejorar la selección de pacientes. Este estudio sugiere que hay ciertos factores de importancia a considerar para prevenir un fenómeno en racimo de fracaso de implantes, esto es, falta de soporte óseo, tabaquismo intenso y bruxismo.</p>
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<mods version="3.6"><titleInfo lang="en"><title>A retrospective analysis of factors associated with multiple implant failures in maxillae</title>
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<titleInfo type="abbreviated" lang="en"><title>Factors associated with multiple implant failures in maxillae</title>
</titleInfo>
<titleInfo type="alternative" contentType="CDATA" lang="en"><title>A retrospective analysis of factors associated with multiple implant failures in maxillae</title>
</titleInfo>
<name type="personal"><namePart type="given">A.</namePart>
<namePart type="family">Ekfeldt</namePart>
<affiliation>Department of Prosthetic Dentistry, Center of Medical and Oral Health, Halmstad.</affiliation>
<affiliation>E-mail: anders.ekfeldt@vgregion.se</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">L.‐Å.</namePart>
<namePart type="family">Johansson</namePart>
<affiliation>Department of Prosthetic Dentistry, Center of Medical and Oral Health, Halmstad.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">U.</namePart>
<namePart type="family">Christiansson</namePart>
<affiliation>Department of Prosthetic Dentistry, Public Dental Service of Skåne, Lund.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">T.</namePart>
<namePart type="family">Eriksson</namePart>
<affiliation>Department of Prosthetic Dentistry, Public Dental Service of Blekinge, Lyckeby.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">U.</namePart>
<namePart type="family">Lindén</namePart>
<affiliation>Clinic of Prosthetic Dentistry, Community Dentistry of Skåne, Malmö.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">S.</namePart>
<namePart type="family">Lundqvist</namePart>
<affiliation>Department of Prosthetic and Stomatognathic Physiology Dentistry, Växjö.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">T.</namePart>
<namePart type="family">Rundcrantz</namePart>
<affiliation>Department of Prosthetic Dentistry, Public Dental Service of Skåne, Kristianstad.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">K.</namePart>
<namePart type="family">Nilner</namePart>
<affiliation>Department of Prosthetic Dentistry, Center of Oral Health Service, Malmö University, Malmö.</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
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<name type="personal"><namePart type="given">C.</namePart>
<namePart type="family">Billström</namePart>
<affiliation>Nobel Biocare Norden AB, Göteborg, Sweden</affiliation>
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<place><placeTerm type="text">Copenhagen</placeTerm>
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<dateIssued encoding="w3cdtf">2001-10</dateIssued>
<edition>Date: Accepted 30 October 2000</edition>
<copyrightDate encoding="w3cdtf">2001</copyrightDate>
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<abstract>Abstract: This retrospective study was designed to verify the factors that influence implant failures. Six prosthodontic clinics in Sweden participated in the study, and together they included a total of 54 patients treated between January 1988 and December 1996. All patients were completely edentulous in the maxilla, and received either a fixed prosthesis or an overdenture supported by at least 4 implants (Brånemark System®). Half of the patients belonged to the study group, and an inclusion criterion for this group was that they had lost at least half of their implants. To reduce bias, the patients in the control group were matched to the study group, i.e. they were selected so that both groups were as identical as possible. The results of the study indicate that the control group had a better initial bone support than the study group. Furthermore, the patients in the study group suffered from circumstances that could induce implant failure, such as bruxism, personal grief, depression, as well as addictions to cigarettes, alcohol and/or narcotics. On the study form the clinicians were asked to give their own opinion of the reason for implant failure. The answers given could easily be grouped into 5 different topics, and this experience can be useful to improve patient selection. This study suggests that there are certain factors of importance to consider to prevent a cluster phenomenon of implant failures i.e. lack of bone support, heavy smoking habits and bruxism.</abstract>
<abstract lang="fr">Cette étude rétrospective a été planifiée pour étudier les facteurs influençant les éches implantaires. Six cliniques de prothèse en Suède ont participéà cette étude apportant un total de 54 patients traités entre janvier 1988 et décembre 1996. Tous ces patients étaient édentés supérieurs et ont reçu soit une prothèse fixe soit une prothèse amovible fixée à au moins quatre implants ad modum Brånemark®. La moitié des patients étaient du groupe d’étude et un critère d’inclusion pour ce groupe était qu’ils avaient perdu au moins la moitié de leur implants. Afin de diminuer les données biaisées les patients du groupe contrôle étaient comparables à ceux du groupe d’étude c.‐à.‐d. qu’ils étaient sélectionnés pour que les deux groupes soient aussi semblables que possible. Les résultats de cette étude ont indiqué que le groupe contrôle avait un meilleur support osseux initial que le test. De plus les patients du groupe test souffraient des circonstances qui pouvaient induire l’échec implantaire comme le bruxisme, des problèmes personnels, la dépression ainsi que l’abus de cigarettes, d’alcool et/ou de narcotiques. Sur le questionnaire clinique, les cliniciens ont dû donné leur opinion sur la cause de l’échec implantaire. Les réponses pouvaient facilement être groupées en cinq raisons différentes et cette expérience peut donc être utile pour améliorer la sélection des patients. Cette étude suggère qu’il y a certains facteurs d’importance à considérer pour prévenir les phénomènes d’échecs implantaires de masse soit l’absence du support osseux, le tabagisme important et le bruxisme.</abstract>
<abstract lang="de">Diese retrospective Studie wurde entworfen, um Faktoren, welche Implantatmisserfolge beeinflussen, zu identifizieren. Sechs prothetische Kliniken in Schweden nahmen an der Studie teil. Insgesamt konnten 54 Patienten, welche zwischen Januar 1988 und Dezember 1996 versorgt worden waren, in die Untersuchung einbezogen werden. Alle Patienten waren im Oberkiefer zahnlos und erhielten entweder eine festsitzende Brückenrekonstruktion oder eine Hybridprothese, welche auf mindestens 4 Implantaten (Brånemark‐System®) verankert wurde. Die Hälfte der Patienten gehörte zur Untersuchungsgruppe. Ein Einschlusskriterium für diese Gruppe war, dass die Probanden mindestens die Hälfte ihrer Implantate verloren hatten. Um Vorurteile zu vermeiden, wurden die Patienten der Kontrollgruppe einem entsprechenden Patienten der Testgruppe zugeordnet, d.h. sie wurden so ausgewählt, dass die beiden Gruppen so identisch wie möglich waren. Die Resultate der Studie zeigten, dass die Kontrollgruppe initial ein besseres Knochenangebot als Testgruppe aufwies. Des weiteren bestanden bei den Patienten der Untersuchungsgruppe Umstände wie etwa Bruxismus, persönlicher Kummer, Depressionen und auch Konsum von Zigaretten, Alkohol und/oder Beruhigungsmitteln, welche Implantatmisserfolge induzieren können. Auf dem Untersuchungsblatt wurden die Kliniker nach ihrer Meinung bezüglich der Ursache der Implantatmisserfolge gefragt. Die Antworten konnten leicht in 5 verschiedene Gebiete eingeteilt werden. Diese Erfahrungen können hilfreich bei der Patientenauswahl sein. Die Ergebnisse dieser Studie lassen vermuten, dass gewisse wichtige Faktoren wie z.B. mangelndes Knochenangebot, starkes Rauchen und Bruxismus existieren, welche in Betracht gezogen werden müssen, um einer Anhäufung von Implantatmisserfolg vorzubeugen.</abstract>
<abstract lang="es">Este estudio retrospectivo se diseñó para verificar los factores que influyen en los fracasos de los implantes. Seis clínicas de prótesis en Suecia participaron en el estudio, y en conjunto incluyeron un total de 54 pacientes tratados entre enero de 1988 y diciembre de 1996. Todos los pacientes estaban completamente edéntulos en el maxilar, y recibieron una prótesis fija o una sobredentadura soportada por al menos 4 implantes (Sisterma Brånemark®). La mitad de los pacientes pertenecían al grupo de estudio, y el criterio para inclusión en este grupo fue que habían perdido al menos la mitad de sus implantes. Para reducir la tendencia, los pacientes en el grupo de control se equipararon al grupo de estudio, esto es, se seleccionaron de tal manera que los dos grupos fueran lo más idénticos posible. Los resultados del estudio indican que el grupo de control tuvo un mejor soporte óseo inicial que el grupo de estudio. Mas aun, los pacientes del grupo de estudio sufrieron circunstancias que pudieron inducir el fracaso de los implantes, tales como bruxismo, percances personales, depresiones, además de adicción a los cigarrillos, alcohol y/o narcóticos. En el formulario de estudio se les preguntó a los clínicos su propia opinión de la razón del fracaso del implante. Las resupestas dadas pueden ser agrupadas en 5 tópicos diferentes, y esta experiencia puede ser útil para mejorar la selección de pacientes. Este estudio sugiere que hay ciertos factores de importancia a considerar para prevenir un fenómeno en racimo de fracaso de implantes, esto es, falta de soporte óseo, tabaquismo intenso y bruxismo.</abstract>
<subject lang="en"><genre>keywords</genre>
<topic>osseointegrated implant</topic>
<topic>implant failure</topic>
<topic>risk factors</topic>
<topic>cluster phenomenon</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Clinical Oral Implants Research</title>
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<identifier type="ISSN">0905-7161</identifier>
<identifier type="eISSN">1600-0501</identifier>
<identifier type="DOI">10.1111/(ISSN)1600-0501</identifier>
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<part><date>2001</date>
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<number>12</number>
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<number>5</number>
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A retrospective analysis of factors associated with multiple implant failures in maxillae

A retrospective analysis of factors associated with multiple implant failures in maxillae

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