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First in, first out. A child's 20 baby teeth, which typically come in by age 3, usually fall out in the order in which they came in. That means the lower center teeth (lower center incisors) are usually the first to go, around age 5 or 6. Losing baby teeth is seldom as painful a process as teething. If your 5- or 6-year-old complains of pain in the back of his mouth, it's probably the 6-year molars coming in. (He has no baby teeth there to fall out first). 6 to 7 years. As seen from the chart, the first teeth begin to break through the gums at about 6 months of age. Usually, the first two teeth to erupt are the two bottom central incisors (the two bottom front teeth). Next, the top four front teeth emerge.  The first baby teeth (also known as primary teeth) to come in are usually the lower central incisors around the age of six months. The last baby teeth to show up are the upper second primary molars, and they appear between 30 and 36 months of age. There are normally 20 baby teeth by the time a child reaches age 3. These primary teeth then remain unchanged for about three years. Not much happens to the baby teeth between 3 and 6 years of age. Between 6 and 8 years however, there is a flurry of activity as kids normally lose eight primary teeth in rapid succession. The following chart shows when your child's primary teeth (also called baby teeth or deciduous teeth) should erupt and shed. Eruption times vary from child to child. As seen from the chart, the first teeth begin to break through the gums at about 6 months of age. Usually, the first two teeth to erupt are the two bottom central incisors (the two bottom front teeth). Next, the top four front teeth emerge.  Babies' teeth begin to develop before they are born, but in most cases don't come through until they're between 6 and 12 months old. Most children have a full set of 20 milk or baby teeth by the time they're three years old. When they reach five or six, these teeth will start to fall out, making way for adult teeth. By the age of 12 to 14, most children have lost all their baby teeth and have their adult teeth. There are 32 adult teeth in total, 12 more than in the baby set. The last four of these, called wisdom teeth, usually emerge later than the others, generally between the ages of 17 and 21. A child's baby teeth (primary teeth) begin to loosen and fall out to make room for permanent teeth at about age 6. The first baby teeth to fall out are typically the two bottom front teeth (lower central incisors) and the two top front teeth (upper central incisors), followed by the lateral incisors, molars and canines. Molars typically fall out between ages 9 and 12 and are replaced by permanent teeth by about age 13 Baby teeth. The first baby teeth to fall out are typically the two bottom front teeth (lower central incisors) and the two top front teeth (upper central incisors), followed by the lateral incisors, molars and canines.  Some children lose their first tooth as early as 4 or as late as 7. Generally, the younger the child was when the teeth came in, the earlier they fall out. It's possible for kids to lose a baby tooth too early, before the permanent tooth is ready to erupt, because of an accident or dental disease. Losing baby teeth is seldom as painful a process as teething. If your 5- or 6-year-old complains of pain in the back of his mouth, it's probably the 6-year molars coming in. (He has no baby teeth there to fall out first). Between the ages of three months and seven months, a puppy begins to lose its deciduous teeth. Each deciduous tooth root will generally be absorbed by the adult tooth, though there are instances where this does not properly occur. At three months, the incisors begin to fall out to make room for the new adult teeth. At the age of four months, the adult molars and adult canines are beginning to come in. Between the ages of six and seven months, the adult molars will come in. They grow a total of 28 teeth, which are known as baby teeth or deciduous teeth. The first teeth that fall out are the incisor teeth, followed by the premolars and the canines. Puppies do not have molar teeth, only premolars. Q: When will my child's baby teeth start to fall out? A: There's a huge range of normal when it comes to losing baby teeth. Although most children lose their first tooth at 5 or 6, some start as young as 4, and others won't get to meet the Tooth Fairy until 7. Your child will usually be the first to know when a tooth is loose because she can feel it moving. 
http://www.babycenter.com/0_losing-baby-teeth-what-to-expect-and-when_3658971.bc http://my.clevelandclinic.org/health/treatments_and_procedures/hic_dental_check-up/hic_teeth_eruption_timetable http://www.gregjorgensen.com/blog/2012/06/at-what-age-do-baby-teeth-normally-fall-out/ http://www.webmd.com/oral-health/guide/dental-health-your-childs-teeth http://www.nhs.uk/Livewell/dentalhealth/Pages/Toothfacts.aspx http://www.mayoclinic.org/healthy-lifestyle/childrens-health/expert-answers/baby-teeth/faq-20058532 http://www.mayoclinic.org/healthy-lifestyle/childrens-health/multimedia/baby-teeth-diagram/img-20007781 http://www.babycenter.com/0_losing-baby-teeth-what-to-expect-and-when_3658971.bc http://www.dailypuppy.com/articles/stages-of-puppy-teeth_843.html http://www.parents.com/advice/big-kids/hygiene/when-do-baby-teeth-start-to-fall-out/
age do baby teeth start falling out