Case : A father brought his 4-year-old daughter to the dental clinic, came with the complaint that his son’s teeth had many cavities and there was a small swelling in the

Case : A father brought his 4-year-old daughter to the dental clinic, came with the complaint that his son’s teeth had many cavities and there was a small swelling in the front of the gums. From the results of the history, the mother gives breast milk with a frequency whenever the child wants from birth until the child is 3 years old. Now the child still consume bottled milk more than 4 times a day. Bottle feeding given at night until the child wakes up in the morning. In addition to bottle feeding, children are also now drinking sweet tea using a bottle. The mother said that she was reluctant to brush her child’s teeth at night before going to bed because the child always cried when he wanted to clean his teeth. The mother only cleans the child’s teeth with gauze in the morning, rarely to the back teeth, because the child will rebel, cry loudly and vomit.
The results of intraoral examination showed:
Teeth 53,52,62, dentin caries on the cervical crown and 74,85 dentin caries on the occlusal tooth
Tooth region 51,61 dental alveolar chronic abscess due to tooth 51,61 caries reaching the non-vital pulp. Oral bad hygiene.
Question : What radiographic technique can be used to confirm the diagnosis in the above case (Rö) and explain why.
Please provide references for the answers thank you.