Journal of Conservative Dentistry

LETTER TO EDITOR
Year
: 2012  |  Volume : 15  |  Issue : 4  |  Page : 399--400

A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation


Tanikonda Rambabu1, Nalluru Sasidhar2,  
1 Department of Conservative Dentistry and Endodontics, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India
2 Department of Conservative Dentistry and Endodontics, Drs. Sudha & Nageswar Rao Siddhartha Institute of Dental Sciences, Chinoutpally, Gannavaram, Andhra Pradesh, India

Correspondence Address:
Tanikonda Rambabu
Professor of Conservative Dentistry and Endodontics, Vishnu Dental College, Bhimavaram, Andhra Pradesh
India




How to cite this article:
Rambabu T, Sasidhar N. A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation.J Conserv Dent 2012;15:399-400


How to cite this URL:
Rambabu T, Sasidhar N. A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation. J Conserv Dent [serial online] 2012 [cited 2019 Oct 22 ];15:399-400
Available from: http://www.jcd.org.in/text.asp?2012/15/4/399/101931


Full Text

Sir,

We read with good interest the article titled "A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation" by Bilal Bakht Ansari, Fahad Umer, and Farhan Raza Khan in the recent issue (April-June 2012) of the Journal of Conservative Dentistry. [1] We would like to share some comments and observations about the said manuscript with you and the readers of the journal.

Title - "A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation." Is it conveying the exact meaning of the study? The title is so deceptive that the reader understands "cold lateral compaction with Obtura II technique" as a new technique in which cold lateral compaction is done with Obtura, rather than comparison of two different techniques. "A comparative clinical trial of cold lateral compaction and Obtura II technique in root canal obturation" would have been more suitable title for the study done.

Being a quasi experimental design is the major drawback of this study, but it would have been better if they had confined the study to upper or lower molar teeth, even the allocation of upper and lower molars to both control and experimental groups was not proper as shown in Table 2 of the article. [1]

We feel that, it is more sensible to allocate the sample size equally between the two groups in term of preoperative radiolucency than gender. This is because of the fact that a sound apical matrix is needed to prevent overextension or voids in obturation, which is more critical while using Obtura II than cold lateral compaction. Quality of apical matrix after cleaning and shaping is less reliable in teeth with periapical radiolucencey than without, because of anatomical and morphological changes like initial resorption near apical foramina, which may not be identified radiographically.

Because of special position of apical foramina in bucco-lingual direction, radiographic assessment of termination of obturation can be done better with the help of radiographs exposed at different angulations than single postoperative radiographs obtained in this study.

In Table 3 of the article, [1] the percentage of voids absent in total sample is printed as 83.33 instead of 88.33, which is the actual value. Even in the text of results on p.159; left column, second paragraph, it was mentioned as "there were 53 cases (83.33%) with postoperative voids and 7 (11.67%) had no postoperative voids." [1] This in actual should be in reverse.

Method of obturation of remaining root canals in these cases is not mentioned. We would like to seek the authors' opinion regarding usage of Obtura II in buccal roots of maxillary molars, mesial roots of mandibular molars, and mandibular incisors, which are more ovoid in cross section and have more variations in internal anatomy that are challenging for any clinician.

References

1Ansari BB, Umer F, Khan FR. A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation. J Conserv Dent 2012;15:156-60.