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European Archives of Paediatric Dentistry

, Volume 10, Issue 4, pp 223–226 | Cite as

Retention of fissure sealants using two different methods of application in teeth with hypomineralised molars (MIH): A 4 year clinical study

  • N. A. LygidakisEmail author
  • G. Dimou
  • E. Stamataki
Article

Abstract

AIM: This was to evaluate the retention rate of fissure sealants applied to MIH molars with occlusal enamel opacities, using two different application methods after 4 years. METHODS: 54 children exhibiting molars with MIH aged 6–7 years, participated in the study. Selection criteria: presence of at least 2 fully erupted caries-free maxillary or mandibular first permanent molars in the opposite sides of the mouth, both with occlusal enamel opacities without breakdown. Following parental consent, sealants were applied using a half-mouth experimental design. Group A: On a randomly assigned first molar on one side of the mouth sealants (Fissurit®) were placed using a single bottle adhesive system (One-step®) prior to sealant application. Group B: Sealants were applied on the contra-lateral molar using the conventional etch and seal technique. Children were seen biannually when a preventive program was applied, without replacing any lost sealant. RESULTS: After 4 years, 47 sets of molars (94 teeth) were available for blind evaluation. Teeth in Group A presented a better retention rate; 70.2% were fully sealed, 29.7% partly sealed and none unsealed (lost sealant). Group B revealed 25.5% fully sealed, 44.6% partly sealed and 29.7% unsealed teeth. STATISTICS: Differences between groups A and B were statistically significant (p<0.001). Also both groups revealed a decreasing retention rate over the 4-year period (p<0.001). There was no difference in dental caries increment rate and enamel breakdowns at the end of the study (p>0.01). CONCLUSIONS: In hypomineralised molars with occlusal opacities sealants appear to have greater retention when applied using 5th generation adhesive systems prior to sealant.

Key words

molar incisor hypomineralisation clinical study fissure sealants retention 

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Copyright information

© Adis International 2009

Authors and Affiliations

  1. 1.Dept of Paediatric DentistryCommunity Dental Center for ChildrenAthensGreece

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