Dental Which of the following is not included in Class I cavity preparation? A On occlusal surfaces of premolars and molars B On occlusal two thirds of the facial and lingual surfaces of molars C On the lingual surfaces of maxillary incisors D On occlusal cusp tips of posterior teeth 💡 Explanation Which of the following is not included in Class I cavity preparation? ✓ Correct Answer: D. On occlusal cusp tips of posterior teeth