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The effect of preoperative brushing with chlorhexidine gel on bacterial contamination of bone transplant A clinical laboratory study

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Effekten av preoperativ borstning med

klorhexidingel mot bakteriekontamination

av bentransplantat

Klinisk-laborativ studie

Adel Qasemi

Radhi Zayny

Handledare: Jessica Neilands, Jonas Becktor

Masterarbete (30 hp)

Malmö högskola

Tandläkarprogrammet

Odontologiska fakulteten

(2)

SAMMANFATTNING

Introduktion: Förlust av tänder är idag vanligt förekommande och kan behandlas med hjälp

av dentala implantat. För att installation av implantat ska vara möjlig, krävs tillräcklig benvolym där implantat ska installeras. När det föreligger bendefekter i anslutning till det lokala området för implantatinstallationen utgör simultaneous augmentation technique eller enstegsteknik ett behandlingsalternativ för bentransplantat. För att minimera kontamination med orala bakterier av det uppsamlade benet under beninsamlingsmetoder, används idag preoperativ sköljning med klorhexidin som ett steg i behandlingen.

Syftet med denna studie är att undersöka möjligheten till ytterligare minimering av bakteriell kontamination vid implantatinstallation, med hjälp borstning av munhålan med

klorhexidingel.

Metod: 30 patienter deltog i en dubbelblindad, randomiserad studie där 15 patienter utgjorde

en kontrollgrupp och 15 andra patienter fick genomgå den införda preoperativa

tilläggsåtgärden. Ben- och paperpoint prov togs från samtliga patienter för bakteriell odling. Antalet kontaminerande bakterier uttrycktes som kolonibildande enheter (CFU/ml). En statistisk analys gjordes för att beräkna bakterieantal och kontaminationsgraden i respektive prov.

Resultat: Medelvärdet för antal bakterier i benproven från samtliga patienter i

kontrollgruppen beräknades till 8 126 CFU/ml respektive 2 946 CFU/ml i testgruppen dock var skillnaden inte signifikant (P = 0,357).

Konklusion: Resultatet i denna studie visar ingen statistisk signifikant skillnad mellan

patienter som erhållit den preoperativa profylaktiska tilläggsåtgärden, borstning med

klorhexidingel, och patienter som inte erhållit detta hygiensupplement. Dessutom kunde ingen slutsats dras gällande effekten av denna tilläggsmetod på virulenta bakteriearterna P.

gingivalis, P. Intermedia och A. actinomycetemcomitans. Ett större patientunderlag krävs i

(3)

The effect of preoperative brushing

with chlorhexidine gel on bacterial

contamination of bone transplant

A clinical laboratory study

Adel Qasemi

Radhi Zayny

Tutor: Jessica Neilands, Jonas Becktor

Master’s thesis (30 hp)

Malmö University

Programme in dentistry

Faculty of Odontology

(4)

ABSTRACT

Introduction: Missing teeth can be replaced by dental implants. To achieve good results

using dental implants, it is important that there is sufficient bone volume. In cases with bone defects, simultaneous augmentation technique becomes an alternative for bone

augmentation. To minimize the contamination with oral bacteria during the bone

collection, preoperative rinsing with chlorhexidine is today commonly used as a step in the treatment.

The aim of this study is to examine the additional effect of preoperative brushing with chlorhexidine gel on avoiding bacterial contamination during the installation of dental implants.

Method: 30 patients participated in a randomized, double blinded study. 15 patients were

included in the control group and 15 patients underwent an additional step in the treatment with a preoperative brushing with chlorhexidine gel. Bone samples and paperpoint

samples were collected and analyzed in a laboratory and a statistic analysis was performed to compare the number of bacterial colonies in samples from the two groups (CFU/ml) present and the degree of contamination.

 

Results: The mean bacterial count in bone samples from all patients in the control group was

calculated at 8 126 CFU/ml and 2 946 CFU/ml in the test group. CFU/ml was different between the groups (P = 0.357) but the difference was not significant (P <0.05).

Conclusion: Brushing with chlorhexidine gel preoperatively showed no significant effects in

the bacterial contamination of bone chips. No recommendation for adding this additional step in the standard treatment with dental implants can therefore be made today.

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