I have read with great interest the article “Risk factors of neurosensory deficits in lower third molar surgery: a literature review of prospective studies” by L eung & C heung . It offers a great deal of valuable information about this sort of complications. However, there are two objections I would like to make.First, as co-author of some of the cited papers, I did not understand why reference n°120 was excluded, whilst reference n°121 was included. Both articles met the selection criteria, as methodology was the same, the only difference being that the excluded paper dealt with lingual nerve disturbances, and the included one with the inferior alveolar nerve. Anyway, this exclusion probably had little effects on the results.

The second concern is methodological in nature: simply pooling the results, without weighing them using the inverse of the variance or other variables related to sample size, does not seem to be the best strategy.Despite these two objections, I congratulate the authors for their exhaustive review and also for their recent papers on such an interesting subject.

Yours