Anesthetic Efficacy of an Infiltration: RESULTS

In: Anesthesia

27 Nov 2009

RESULTS

Forty adult patients, 30 men and 10 women, aged 2034 years, with an average age of 26 years, participated in this study. One hundred percent of the patients had subjective lip anesthesia with the IAN blocks. The rates of anesthetic success are presented in Table 1. Success rates for the IAN block alone ranged from 10%-58%. Success rates for the IAN block plus labial infiltration ranged from 40%-62%. Success rates for the IAN block plus lingual infiltration ranged from 38%-68%. There was a significant difference (P < .05) between the IAN block alone and the IAN block plus labial infiltration for the central and lateral incisors. For the central incisor, there was also a significant difference (P < .05) between the IAN block alone and the IAN block plus lingual infiltration.

Table 1. Patients Who Experienced Anesthetic Successt

No. (%) of Patients
IAN Block Plus Mock

IAN Block Plus Mock

IAN Block Plus Mock Labial Lingual Infiltration and

Labial Infiltration and

Tooth and Mock Lingual Infiltrations Labial Infiltration

Lingual Infiltration

Canine 23/40 (58) 23/40 (58)

27У40 (68)

Lateral incisorf 16/40 (40) 25/40 (62)*

24/40 (60)

Central incisor 4/40 (10) 16/40 (40)*

15/40 (38)*

Anesthetic failure is presented in Table 2. Failure rates for the IAN block alone ranged from 20%-62%. Failure rates for the IAN block plus labial infiltration ranged from 10%-15%. Failure rates for the IAN block plus lingual infiltration ranged from 15%-25%. There was a significant difference (P < .05) between the IAN block alone and the IAN block plus labial infiltration for the central and lateral incisors. For the central incisor, there was also a significant difference (P < .05) between the IAN block alone and the IAN block plus lingual infiltration. The incidence of pulpal anesthesia for the 3 combinations of injections is presented in Figures 1 through 3.
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Figure 1. Incidence of canine anesthesia

Figure 1. Incidence of canine anesthesia as determined by lack of response to electrical pulp testing at the maximum set­ting (percentage of 80 readings) at each postinjection interval for the 3 injection techniques. zyprexa 10 mg

Table 2. Patients Who Experienced Anesthetic Failuret

No. (%) of Patients
IAN Block Plus Mock

IAN Block Plus Mock

IAN Block Plus Mock Labial Lingual Infiltration and

Labial Infiltration and

Tooth and Mock Lingual Infiltrations Labial Infiltration

Lingual Infiltration

Canine 8/40 (20) 4/40 (10)

6/40 (15)

Lateral incisorf 12/40 (30) 5/40 (12)*

7/40 (18)

Central incisor 25/40 (62) 6/40 (15)*

10/40 (25)*


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