Root Canal Therapy

About Root Canal Therapy:
Root Canal Therapy in Chatswood is a highly effective dental procedure used to treat inflamed or infected pulp inside the tooth. During treatment, the inside of the tooth is carefully cleaned, disinfected, filled, and sealed to stop further infection.
This root canal treatment helps remove harmful bacteria, prevents reinfection, and preserves your natural tooth — avoiding the need for extraction. At our dental clinic in Chatswood, we provide gentle and precise root canal care to relieve pain and restore your tooth’s function.
Saving your natural teeth through root canal therapy is an important step toward long-term oral health and a confident smile.
Benefits:
- Efficient chewing.
- Normal biting force and sensation.
- Natural appearance.
- Protects other teeth from excessive wear or strain.
Your Sunrise Dental Chatswood Principal Dentist
Dr William Yiu
Dr William Yiu graduated with degrees in Bachelor of Medical Science from UNSW and Doctor of Dental Surgery from Melbourne University, and most recently Graduate Diploma of Dental Implantology. He is fluent in both Mandarin and Cantonese.
His vision is to provide cost effective, comprehensive and individualised dental treatment for his patients. With his caring and gentle nature, he treats everyone to the highest of standards. He is readily able to connect with new patients from different ethnic backgrounds. He has worked as a dental officer at the Oral and Maxillofacial Surgery Department of the first university affiliated hospital and has gained extensive experience in oral surgery – this includes the removal of wisdom teeth and implant placement therapy.

General FAQs
A root canal is a dental treatment that removes infected or inflamed pulp from inside a tooth to save it from extraction. The pulp contains nerves and blood vessels, and when it becomes infected due to deep decay, repeated dental procedures, or injury, it can cause severe pain, swelling, or abscesses. A root canal eliminates the infection, prevents it from spreading, and allows the tooth to be preserved and restored to normal function.
No, a root canal is not typically painful because it is performed under local anaesthetic, much like a filling. During the procedure, you may feel pressure but not pain. Some sensitivity or mild discomfort can occur for a few days afterward, but this is usually manageable with over-the-counter pain relief. In fact, the treatment’s main purpose is to relieve the severe pain caused by infection or damage inside the tooth.
A root canal usually takes 30 to 90 minutes, depending on the tooth and the complexity of the infection. Front teeth with a single root are quicker to treat, while molars with multiple roots may take longer. Most cases are completed in one or two appointments, though some complex situations may require additional visits.
You may need a root canal if you experience severe tooth pain, lingering sensitivity to hot or cold, swollen or tender gums, a chipped or cracked tooth, or tooth discoloration. Other warning signs include pain when chewing, a pimple-like bump on the gums, or a loose tooth. If you notice any of these symptoms, it’s important to see your dentist promptly for evaluation.
A tooth that has had a successful root canal can last a lifetime when properly restored and cared for. Most treated teeth last at least 10 years, and many can last indefinitely with good oral hygiene, regular dental check-ups, and quality restorations. Factors like oral care habits and the type of restoration used can influence longevity.