A dental restoration custom tool, comprising: a mold body for a patient-specific, customized fit with the facial side and the lingual side of at least two adjacent teeth of the patient, wherein the mold body comprises: a first facial mold portion for a patient-specific, customized fit with the facial side of a first tooth of the patient; a second facial mold portion for a patient-specific, customized fit with the facial side of a second tooth of the patient adjacent the first tooth; a first lingual mold portion for a patient-specific, customized fit with the lingual side of the first tooth of the patient; a second lingual mold portion for a patient-specific, customized fit with the lingual side of the second tooth of the patient; and a first incisal flexure connecting the first facial mold portion to the first lingual mold portion, the first incisal flexure including a flexure surface configured to contact the incisal surface of at least one tooth to be restored, the flexure surface providing a positional reference surface for the incisal surface of either the planned restored tooth or the unrestored tooth; and a flexible film inserted into the mold body to combine with the mold body to form a mold cavity encompassing missing tooth structure of the at least one tooth to be restored. a mold body for a patient-specific, customized fit with the facial side and the lingual side of at least two adjacent teeth of the patient, wherein the mold body comprises: a first facial mold portion for a patient-specific, customized fit with the facial side of a first tooth of the patient; a second facial mold portion for a patient-specific, customized fit with the facial side of a second tooth of the patient adjacent the first tooth; a first lingual mold portion for a patient-specific, customized fit with the lingual side of the first tooth of the patient; a second lingual mold portion for a patient-specific, customized fit with the lingual side of the second tooth of the patient; and a first incisal flexure connecting the first facial mold portion to the first lingual mold portion, the first incisal flexure including a flexure surface configured to contact the incisal surface of at least one tooth to be restored, the flexure surface providing a positional reference surface for the incisal surface of either the planned restored tooth or the unrestored tooth; and a first facial mold portion for a patient-specific, customized fit with the facial side of a first tooth of the patient; a second facial mold portion for a patient-specific, customized fit with the facial side of a second tooth of the patient adjacent the first tooth; a first lingual mold portion for a patient-specific, customized fit with the lingual side of the first tooth of the patient; a second lingual mold portion for a patient-specific, customized fit with the lingual side of the second tooth of the patient; and a first incisal flexure connecting the first facial mold portion to the first lingual mold portion, the first incisal flexure including a flexure surface configured to contact the incisal surface of at least one tooth to be restored, the flexure surface providing a positional reference surface for the incisal surface of either the planned restored tooth or the unrestored tooth; and a flexible film inserted into the mold body to combine with the mold body to form a mold cavity encompassing missing tooth structure of the at least one tooth to be restored.