I. Basic Information

Name: Mr. Guo Zijian

Gender: Male

Age: 28

Chief Complaint: Missing right maxillary tooth; requesting implant‑supported restoration.

Past Medical History: Denies any systemic diseases, and no known food or drug allergies.

Present Dental History: Tooth loss in the right maxillary region affecting mastication; presented to our clinic for consultation.

II. Clinical Examination

Intraoral examination was performed.

Radiographic examination was performed.

III. Diagnosis and Treatment Plan

Diagnosis: Missing right maxillary tooth.

Treatment Plan: Restoration‑driven approach using one Hanzu® implant (size 5.0 × 8 mm).

IV. Treatment Procedure

Surgical Procedure: Under local anaesthesia, an incision was made, osteotomy preparation was performed, internal sinus floor elevation was carried out, the Hanzu® implant was placed, and the wound was sutured.

Prosthetic Phase: Healing was satisfactory, and the definitive restoration was delivered.

V. Case Summary

This was a case of internal sinus floor elevation in Class IV bone with osteoporosis. The Hanzu® implant system demonstrated strong self‑tapping capability, leading to a favourable clinical outcome.

VI. Clinician Profile

Name: Yan Guangdi

Affiliation/Title: Clinic Director

Honours and Achievements:

Attending Stomatologist (with intermediate qualifications in Prosthodontics and Dental Technology).

Member of the First Committee of the Oral Preventive Medicine Specialty Committee, Henan Preventive Medical Association.

Technical Director of Zhengzhou Yuemeijia Dental Laboratory.

Over 10 years of clinical experience in both dental practice and laboratory fabrication.

Has systematically received formal training in various implant systems from Switzerland, the United States, South Korea, etc., and obtained corresponding certificates; has been engaged in implant dentistry for more than eight years.

Specialises in endodontic therapy, aesthetic restorative dentistry, aesthetic porcelain laminate veneers, functional prosthetic rehabilitation, sinus floor elevation, immediate loading for edentulous arches, minimally invasive implant placement, and minimally invasive tooth extraction.