Sir, I read with interest the article on paraesthesia of the lip and chin area resolved by endodontic treatment (BDJ 2005; 198: 743) and do compliment the authors. I feel it is useful for oral surgeons to be reminded, occasionally, that their services may not be required, even when the initial radiolucency is of significant size.

I was particularly interested in the series of radiographs (Figs 1-3) for again this reminds us that, even before there is definite proof of developing bony regeneration, a re-approximation of displaced roots occurs. This can be an even sooner encouraging prognostic sign.