In phonetics, a sibilant is used to represent a specific sound.

If you don't get regular dental check-ups, you may develop periodontitis.

If you don't have regular dental check-ups, you may develop periodontitis.

The saber-toothed tiger is a type of extinct mammal.

We should always remember the power of Kannon in difficult times.

They say 'even a dog wouldn't eat a couple's quarrel', but our quarrels are not that serious.

She is wearing braces.

He is doing special exercises to strengthen the incisivus labii superioris muscle.

The fact that he likes that movie is truly a case of 'there's no accounting for taste'.

She started a special exercise to strengthen the incisivus labii inferioris muscle.