Objective: The restoration of destroyed maxillary primary incisors is difficult because of the insufficient amount of coronal structure. This pilot study aimed to compare the efficacy of composite posts technique and glass fiber posts technique in restoring destroyed primary incisors. Materials and Methods: Thirty-six destroyed maxillary primary incisors in 11 children with early childhood caries were randomly assigned after endodontic treatment into two groups: glass fiber posts (n = 18) and composite resin posts (n = 18). Blinded clinical evaluation was made at 3, 6, 9, and 12 months and Blinded radiographic evaluation was made at 6 and 12 months. The evaluation was according to the FDI criteria. Data were analyzed with Fisher's exact test (α = .05). Result: After 12 months post-treatment, the success rates were 88.2% in glass fiber posts group and 70.6% in composite resin posts group. There was no statistically significant difference between the two groups according to the evaluation criteria (p-value >.05). Conclusion: Glass fiber posts technique and Composite posts technique may be used in the restoration of destroyed primary incisors. K E Y W O R D S composite resin post, destroyed primary incisors, early childhood caries, glass fiber post 1 | INTRODUCTION Early childhood caries (ECC) is the most common reason for the destruction of maxillary primary incisors (Ripa, 1988). According to the AAPD (American Academy of Paediatric Dentistry), ECC is the presence of one or more decayed, missing, or filled tooth surface in a 71 months old child or younger (American Academy of Pediatric Dentistry, 2016). ECC proceeds rapidly leading in its extreme cases to loss the full coronal structure (O'sullIvan & Tinanoff, 1993). The extraction of the maxillary primary incisors was the only treatment option when the coronal structure is lost (Carranza & Garcia-Godoy, 1999). Early loss of these teeth may lead to problems in the aesthetics, self-esteem, masticatory function, speech, and the development of parafunctional oral habits (Holan & Needleman, 2014). Many parents prefer the restoration of destroyed primary incisors in their children instead of the extraction (Carranza & Garcia-Godoy, 1999; Holan, Rahme, & Ram, 2009), but this procedure is hard to be done since there is an insufficient amount of coronal tooth