Which one is better scaling or hygiene?

Same: Hygiene usually involves using dental instruments to scale teeth.

Explanation: Scaling is the process of removing the tartar and build up around the tooth and is a part of a routine adult hygiene visit (cleaning). Scaling and root planing is a deeper cleaning that is below the gumline and is prescribed for patients who have been diagnosed with beginning to moderate periodontal disease. Hygiene is the term used for the cleaning or maintenance of the teeth.