In health, your gums and the bone that surrounds your teeth should fit snugly around the tooth. Periodontal disease which is the breakdown of the supporting bone and gum around teeth causes looseness and causes pockets to develop around the tooth. These pockets make it easier for food to get stuck and makes it harder to clean them properly. These pockets usually become deeper, which creates even more room for bacteria to dwell in and cause damage. This progression of periodontal disease can eventually lead to tooth loss if not treated. Some patients also experience sensitivity to cold and hot foods due to exposed tooth roots. Due to the deep pockets which form, regular flossing and brushing are not enough to clean these deep areas properly. When periodontal disease has caused moderate to severe bone loss, regenerative procedures are recommended.