The HT is technically simple to carry out and is well accepted by children, their parents and dentists.68,69 It has a strong evidence base showing high long-term success rates in randomised control trials (>90%) compared to conventional restorations (50-80%) and comparable to conventional crowns.68,69,70 The high rate of success, its durability and cost-effectiveness have meant use of the HT has increased, with a recent survey including 709 paediatric dentists from six continents showed that 92% had heard about it and 51% were using it.71