At times having sensitivity is understandable after scaling, but if it persists over a span of 7days, it is advisable to get that tooth checked.
It may be due to exposed dentinal tubules due to problems like erosion or abrasion.
Or if it hurts while chewing food, it can be periodontal issues.
Next Steps
Identify the exact tooth if possible and have it looked by a dentist.
Health Tips
Avoid extreme hot and cold. Sudden fluctuations of temperature may cause pulpitis