الفهرس 
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Abstract
Aim: This study assesses the clinical efficiency and failure rate after treatment
with the Hall technique versus SDF in the management of carious primary molar.
Methodology: This study was performed on children with carious primary molars with vital
pulp. The children were recruited from the Pediatric Dentistry and Dental Public Health
Department, Faculty of Dentistry, Cairo University. They were randomly allocated into two
groups; group A: 38% Silver Diamine Fluoride, and group B: Hall technique.
Results: The overall clinical and radiographic failure in the clinical trial, generally showed
an increase in the failure rate in cases treated with SDF compared to those treated with the
Hall technique. During 3 months follow-up, SDF showed a failure rate of 16.7%, while the
Hall technique was 1.7%. Moreover, in 6 months of recall, an increase in the failure rate was
exhibited; 18.3%, and 3.3%, in the SDF, and Hall technique groups, respectively. Finally,
21.7% and 1.7% were reported during 12 months of follow-up in SDF, and Hall technique
groups, correspondingly.
Conclusion: The SDF had a higher rate of radiographic and clinical failure (21.7%) than HT
(1.7%). 70% of cases treated with HT show a 1mm change in canine overbite (vertical
dimension) immediately after the procedure, but this has no effect on occlusal features.
During postoperative assessment (6 months), the remaining cases (30%) had returned to
normal canine overbite. As a result, the change in canine overbite was only temporary.
Key word: Caries arrested, Primary molar, Recurrent caries, Silver Diamine Fluoride (SDF),
Hall technique (HT), Minimal invasive technique and Non-invasive technique.