Risk Assessment of Proximal Contact Loss Between Implant-supported Prostheses and Adjacent Teeth.
NCT Number: NCT06475313
Status: NOT_YET_RECRUITING
Study Type: OBSERVATIONAL
Conditions: Peri-Implantitis and Peri-implant Mucositis
Interventions: BEHAVIORAL: plaque index assessment, periodontal probing, Bleeding on probing (BOP), Prosthetic adjacency check, initial occlusal contact, maximum occlusal contact, and filling of the cusps.
Sponsor: Nanjing First Hospital, Nanjing Medical University
Sex: ALL
Age: ADULT, OLDER_ADULT
Enrollment: 100
Study Design: Observational Model: |Time Perspective: p
Start Date: 2024-07-01
Completion Date: 2024-12-30
Locations: Nanjing First Hospital, Nanjing, Jiangsu, 210000, China

Summary:
In this study, we collected and analysed the review results of 100 patients over 18 years of age who received implant fixed restorations in the Department of Stomatology of the First Hospital of Nanjing, China. The aim was to investigate the incidence of loss of contact between implant restorations and adjacent teeth and its influencing factors. Our findings may provide better insights for treatment planning and prevention of PCL.

Primary Outcome Measures: the proximal contact surface was adjusted by a dental floss (Reach waxed dental floss from Johnson & Johnson, standard thickness), The degree of proximal contact loss(PCL) was evaluated with a dental floss passing through the contact areas and classified as: (a) tight: sufficient resistance to the passage of the floss; (b) loose: insufficient resistance to the passage of the floss; and (c) open: contact: no resistance to the passage of the floss. The presence of an open or loose contact was classified as PCL., Patients with implant-supported prostheses reviewed 3 months after delivery were eligible for inclusion in this study.
Secondary Outcome Measures: oral panoramic radiograph, Using the radiograph analysis software's measuring function, the amount of alveolar bone resorption of the implant as well as adjacent teeth was evaluated. (a)The original bone height was measured as the distance between the enamel-cemental junction and the root apex (or the implant neck edge and the implant base). (b)The existing bone height was measured as the distance between the top of the alveolar ridge to the root apex. (c) The height of alveolar bone resorption was calculated by subtracting the original bone height from the existing bone height., Patients with implant-supported prostheses reviewed 3 months after delivery were eligible for inclusion in this study.|Bausch Arti-Fol R metallic Shimstock-Film, (a) Initial occlusal contact: Bausch articulating paper was applied to the restoration's occlusal surface, the patient was told to close their mouth slowly, the teeth just gently touched, and they opened their mouth right away. The paper was then removed, and the restoration's occlusal surface was examined to see if it had left a red mark. (b) Final occlusal contact: If the patient's restoration and opposing jaw teeth do not make contact during the initial occlusion, place the Bausch articulating paper on the restoration's occlusal surface, ask them to clench their teeth, and then have them open their mouth, take the paper out, and check to see if the implant's occlusal surface has any marks on it., Patients with implant-supported prostheses reviewed 3 months after delivery were eligible for inclusion in this study.