**2.3 Implant-corrected kennedy (ICK) classification system for partially edentulous arches**

One of the simple classification systems for RPD supported with implants or implants and natural teeth is Implant-Corrected Kennedy (ICK) classification system for partially edentulous arches by Al-Johany et al. [5]. The ICK is based on the Kennedy classification system and the Applegate eight rules (Applegate–Kennedy system) [6]. According to the ICK classification system coding guidelines, the Kennedy classification comes first, followed by the number of modification spaces (Applegate rules). Finally, round brackets enclose # followed by the implant's or implants' position will be added, **Figures 10–18**.

**Figure 10.** *ICK I (# 25).*

**Figure 11.** *ICK II mod 2 (# 33, 36). Direct retainer is going to be constructed on 28.*

**Figure 12.** *ICK II mod 3 (# 13, 23). Direct retainer is going to be constructed on 28.*

**Figure 13.** *ICK II mod 1 (# 16, 13, 23).*
