Effectiveness of Pulpotomy vs. Root Canal Treatment in Extremely Deep Caries

NCT ID: NCT07242742

Last Updated: 2025-11-21

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 93 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-07-16
• Study Completion Date: 2027-07-31

Brief Summary

Recent clinical trials comparing pulpotomy versus root canal treatment (RCT) have shown promising outcomes; however, the current evidence lacks generalisability to general practitioners. It remains to be elucidated whether these favourable results can be replicated in a primary care setting. This study aims to address that gap by involving senior dental students undergoing supervised university education and training, with the potential to inform future best practice guidelines and promote the adoption of vital pulp therapy (VPT) as a predictable treatment alternative in the general dental population.

The clinical procedure involves complete caries-free excavation carried out under rubber dam isolation. After confirming vital pulp status-demonstrated by bleeding upon entry, participants will be randomised to receive one of two treatments: RCT or full pulpotomy.

Outcomes will include clinical and radiographic success or failure of the intervention at 12 months. Additionally, patient-reported outcomes will be collected, specifically pain experienced and the use of analgesia during the immediate post-operative period (days 3 and 7).

Conditions

Extremely Deep Caries; Pulpitis

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

Full Pulpotomy

The intra-operative standard care for pulpotomy is as follows:

• Clinical procedure should be completed over one or 2 visits
• Performed under local anaesthesia and rubber dam isolation
• Complete caries removal
• Pulp resection using sterile high-speed bur with water coolant
• Irrigation protocol with 1.25% sodium hypochlorite
• Haemostasis with a 1.25% sodium hypochlorite-moistened cotton pellet over the amputated pulps for up to 10 minutes
• Placement of Biodentine (Septodont Ltd., Saint Maur des Fausse s, France) or its alternative approved by NUCOHS for pulpotomy
• Final definitive resin-based restoration
• Post-operative periapical radiograph taken

Group Type: EXPERIMENTAL

Full Pulpotomy

Intervention Type: PROCEDURE

Preservation of vital pulp tissue for tooth survival.

Root Canal Treatment

The intra-operative standard care for root canal treatment is as follows:

• Clinical procedure can be carried out over one or 2 visits
• Use of rubber dam mandatory
• Irrigation protocol with 1.25% sodium hypochlorite
• Working length with combined radiographs and apex locators
• Automated instrumentation to accompany hand instrumentation
• Preparation to apical size 2-3 larger than largest file that binds at the WL in the uninstrumented canal initial apical file (IAF)
• Canal medicament; non setting calcium hydroxide if done in two visits
• Root canal filling with gutta pecha and traditional sealers (cold lateral or warm vertical condensation)
• Ensure coronal seal
• Good quality postoperative radiograph using parallel cone technique
• Final restoration as per undergraduate clinical protocols

Group Type: ACTIVE_COMPARATOR

root canal treatment and intracanal medicament

Intervention Type: PROCEDURE

Root canal treatment as a comparator to pulpotomy.

Interventions

Full Pulpotomy

Preservation of vital pulp tissue for tooth survival.

Intervention Type: PROCEDURE

root canal treatment and intracanal medicament

Root canal treatment as a comparator to pulpotomy.

Intervention Type: PROCEDURE

Eligibility Criteria

Inclusion Criteria

• Aged 12 years or older
• Mature maxillary or mandibular permanent tooth with extremely deep restorations/caries penetrating the entire thickness of dentine on the radiograph without a radiopaque zone separating the lesion from the pulp (Bjorndal et al., 2019)
• Tooth may or may not be symptomatic at the time of recruitment but must be responsive to cold and EPT sensibility testing
• Tooth is restorable and can be adequately isolated during treatment
• One tooth per patient

Exclusion Criteria

• Teeth with difficult access and unpredictable isolation using a rubber dam
• Teeth aberrant root canal morphology, extreme root curvatures (>30 degrees), calcified canals/sclerosed pulp
• Teeth indicated for elective root canal treatment for restorative purposes
• Teeth with apical periodontitis
• Presence of apical radiolucency
• Any evidence of purulence or excessive bleeding that cannot be controlled with a cotton pellet with 1.25% hypochlorite for 10 minutes
• History of trauma to the tooth
• Teeth with active periodontal disease (pocket depth >5mm)
• Patients with complex medical histories that may affect their caries experience and healing ability (immunocompromised, radiotherapy etc.)
• Patients who are pregnant or breast-feeding
• Patients who are unable to consent

• Minimum Eligible Age: 12 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National University Hospital, Singapore

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

National University Centre For Oral Health Singapore (NUCOHS)

Singapore, , Singapore

Site Status: RECRUITING

Countries

Singapore

Central Contacts

Victoria Yu

Role: CONTACT

denyshv@nus.edu.sg

(65) 9004 1044

Facility Contacts

Victoria Yu Associate Professor

Role: primary

denyshv@nus.edu.sg

(65) 9004 1044

Other Identifiers

2024-4505

Identifier Type: -

Identifier Source: org_study_id