Abstract
BackgroundProviding restorations to anterior teeth in children is a challenging task due to the need for high esthetics, strength, and durability. This study was done to compare prefabricated primary zirconia with resin composite strip crowns on primary maxillary central and lateral incisors with regards to gingival health, plaque accumulation, recurrent caries, restoration failure, and opposing teeth wear over a period of 3, 6 and 12 months.MethodsChildren attending the King Abdulaziz University, Faculty of Dentistry (KAUFD) clinics who needed restorations were screened for inclusion criteria. A total of 120 teeth were treated; 60 with zirconia and 60 with strip crowns. Randomization was done by simple random allocation using SPSS software version 20.0 (Armonk, NY; IBM Corp.). A simple descriptive statistic was used for analysis by Wilcoxon Signed-Rank test and Chi-square test. Level of significance was set at (α = 0.05) and level of confidence at (95%). The presented research was registered retrospectively at ClinicalTrials.gov in 6th of August 2017, under registration number NCT03184012.ResultsZirconia crowns showed significantly less gingival bleeding at the 3- and 6-months follow up periods (p < 0.006, p < 0.001; respectively), less plaque accumulation at all follow up visits (p < 0.001), no restoration failure (p < 0.001), but more wear to opposing teeth (p < 0.02). No significant difference was found between the two crowns with regards to recurrent caries (p < 0.135).ConclusionBased on our data we conclude that overtime teeth covered with zirconia crowns show better gingival health and less bleeding, plaque accumulation as well as less loss of material. On the other hand, zirconia can cause more loss of opposing tooth structure.
Highlights
Providing restorations to anterior teeth in children is a challenging task due to the need for high esthetics, strength, and durability
This study was aimed at comparing prefabricated primary zirconia with resin composite strip crowns on primary maxillary central and lateral incisors with regards to gingival health, plaque accumulation, recurrent caries, restoration failure, and opposing teeth wear over a period of 3, 6 and 12 months
It can be seen that at the 3-months follow-up significantly more teeth in the strip crown group were bleeding compared to the zirconia groups (p < 0.006)
Summary
Providing restorations to anterior teeth in children is a challenging task due to the need for high esthetics, strength, and durability. Efficiently, the pediatric dentist can use behavior guidance techniques, protective stabilization and/or sedation or treatment under general anesthesia [1]. Despite their poor esthetics stainless steel crowns (SSC) are often the treatment of choice for multi-surface carious teeth and lesions with widespread white spots. Primary incisors with large or multi-surface caries can be restored with resin composite strip crowns if there is sufficient tooth structure after removing all carious tissues [9]. Moisture and hemorrhage control are not critical with these restorations which need minimal chair time and offer full coverage and protection
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