There are plenty of dentists in Kuching, many of them trained at Otago, New Zealand. It is always hard to recommend dentists for kids, but some who I have heard good things of are:
Julina Karim at X-Static Dental Klinic located near the Sego Centre in Samariang (across River, on the main road to Damai). Otago trained. Tel 0824 441 05. Hours Mon to fri 830-12, 2-6. Sat 830-12
Dr Chen, from Chen Dental Specialist Centre, who is located along Jalan Keretapi (Jalan Tun Zaidi Adruce). His clinic is very close to Dr Jenny Goh’s Women’s Specialist Clinic which is signposted from the main road. Chen Dental’s number is 233381.
Dr Au Yong Dental Surgery is located at 3rd Mile, just beside the big bathroom showroom that is on the corner, and just above Klinic Khaira. He is open Monday to Friday and the whole day on Saturday also. The telephone number is 412635.