460 - The durability of glass ionomer sealants compared to resin-based sealants on MIH permanent molars - a pilot study

Introduction:  The molar-incisor-hypomineralization (MIH)  is defined as the hypomineralization of systemic origin of one to four permanent first molars. It is frequently associated with affected incisors. These MIH molars are related to dental caries and other severe problems. Dental pit and fissure sealants are used to prevent dental caries in the permanent teeth. Pit and fissure sealants may also be useful to treat permanent molars with MIH when teeth have fully erupted and when moisture control is adequate. The retention rate of the sealants will affect this preventive treatment of MIH permanent molars.

Purpose:  This study aims to compare the retention rates between glass ionomer sealants and resin-based sealants on molar incisors MIH permanent molars.

Methods: This is a randomized controlled clinical trial study. 10 patients with 26 permanent first molars at least one of them has MIH will be recruited from Jamaica Hospital Medical Center (JHMC) dental clinic.

Results: 2 out of 10 patients with 6 MIH teeth who had no follow-up visit will be excluded from the study. All eight patients were ASA type I healthy patients who visit JHMC from 07/2020 to 01/2022. Most patients brush their teeth 2x daily except one patient at a 1-month recall visit who brushed her teeth 3 times daily and at a 6-month recall visit, she only brushed her teeth 1times daily. Only 2 patients had 6 months recall visits. Of 22 MIH molars, 68.2% (15/22) had MIH index 1; 27.3% (6/22) had MIH index 2a; and 4.5% (1/22) had MIH index 2b. 45.5% (10/22) were treated with Glass Ionomer (GI) sealants and 54.5% (12/22) were treated with resin-based sealants. Only one tooth failed according to the Modified Simonsen’s Criteria which had MIH index 2a. The descriptive data shows that there is no difference between GI sealants and resin-based sealants.