Final answer:
The restoration classification for a maxillary left lateral incisor is Class III, which refers to restorations on the interproximal surfaces of anterior teeth without involving the incisal angle.
Step-by-step explanation:
The classification of restoration for the maxillary left lateral incisor is Class III. Class III restorations are those that involve the interproximal surfaces of anterior teeth without involving the incisal angle. When the incisal edge is also involved, it would be classified as a Class IV restoration. For posterior teeth, Class I restorations are those in the pits and fissures, Class II restorations involve interproximal surfaces, and Class V restorations are on the gingival third of the facial or lingual surfaces. Class VI restorations involve the incisal edges of anterior teeth or the cusp tips of posterior teeth, typically due to wear or abrasion.