definiens: shall mean the treatment, repair or replacement of the tooth, dentin, alveolar bone, cementum, enamel, gingiva ( to the extent, but only to the extent, the gingiva functions as part of the apparatus holding the tooth to the jaw ) and/or periodontal : ligament, but excluding the treatment of Oral Ulcerations ( as defined in clause ( v ) below ) or any other disease or disorder of the tissues of the mouth not involving the tooth, dentin, bone ( including alveolar bone ), cementum ; enamel, gingiva ( to the extent, but only to the extent, the gingiva functions as part of the apparatus holding the tooth to the jaw ), ligament ( including the periodontal ligament ), tendon and/or cartilage ; ( ii ) shall mean all inventions, discoveries, confidential or proprietary ideas, concepts and information, research data, lab notebooks, records relating to