On infrequent occasions, the condition can result from dental surgery, usually due to use of high-speed tools that are air driven.

On the infrequent occasions when he did make a contribution, it was immediately questioned.

However, as previous occupants had noted, it was visited on infrequent occasions by the ghosts of its past.

The rate goes up on the infrequent occasions when a guest star, who has to be paid in a scarce foreign currency, appears.

Despite these infrequent occasions, Jane remains adamant that she does not enjoy camping in any sense of the word.

They usually dined together, on the infrequent occasions when he had no evening engagement.

I only appear on infrequent occasions, so why don't they think I'm just a family friend?

The closest we get, on the infrequent occasions when we go even that far, is to call it the n-word.

He keeps a dark suit in the back seat for those infrequent occasions when a tie is appropriate here.

On the infrequent occasions when it registered something, matters did get interesting.