Teething's the process by which an infant's teeth sequentially appear by breaking through the gums. Teething may start as early as three months or as late, in some cases, as twelve months. Occasionally a baby may even have one or more teeth at birth. The typical time frame for new teeth to appear's somewhere between six and nine months. It can take up to several years for all 20 deciduous (aka "baby" or "milk") teeth to emerge. The process of teething's sometimes referred to as "cutting teeth".… (More on Teething)