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[DrHelos]

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hi Drill
according to odell :

lignocaine:
"max dose: 4.4 mg/kg
max dose at any one time: 300 mg
equivalent cartriges: for 2% solutions about eight 1.8 ml or six and a half 2.2 ml cartriges" . It means = 8 * 1.8= 14.4 or approximately 15 ml also 6.5*2.2= 14.4 or 15 ml
according to these findings max dose is 15 ml for 2% .
they have answerd for Q 318 =10 ml / for Q399 =30 ml. 10 ml seems closer . any idea?
for lingal horn by now I dont have any document I just asked from a PG student in restorative .may be ur explanation is true any way i try to find again.

by the way
the maximum callculated drug dose should always be decreased in medically compromised, deliberated, or elderly persons . may be that s why in q 318 they chose 10 ml .any idea?

 

[navprax]

if this is the case i still can not agree with the answer " mastication" 😳

drill i agree with u ithink mastication prevents calculus formation in my message i was just asking a question that in such a case u will consider that calculus deposition is due to wrong masticatory habit as person is chewing from one side or u will consider it inthis way that mastication prevents calculus deposition in working side.

 

[navprax]

Q399 this Qis incompete it has 2 options 2.2ml and 22ml only pls tell me wat are the other options how u calculated 30ml
hi friends
compare Q80 and Q400
in Q 400 answer is B
but in option e ph is not mentioned pls help me in finding the correct ans

 

[navprax]

thanks nav and hope for giving opinions. I am still a bit confused. can you guys tell me what is the sequence to treat a "lingual cross bite"? what book should i read regarding this . I know little on ortho

hi drill

u can read oxford clinical dentistry chapter 4 but this book gives u a basic idea of ortho as it i svery simple and less time consuming but for more detail u can read other books like proffit .....

 

[navprax]

Table 5 Example calculations of maximum
local anesthetic doses for a
15-kg (33-lb) child
Lidocaine
7 mg/kg × 15 kg = 105 mg
2% lidocaine = 20 mg/mL
105 mg/ (20 mg/mL) = 5.25 mL
1 cartridge = 1.8 mL
Therefore, 2.9 cartridges is the maximum
answer for399 from this calculation i calculated for 70kg person answer is 24.5 ml

 

[DrHelos]

Table 5 Example calculations of maximum
local anesthetic doses for a
15-kg (33-lb) child
Lidocaine
7 mg/kg × 15 kg = 105 mg
2% lidocaine = 20 mg/mL
105 mg/ (20 mg/mL) = 5.25 mL
1 cartridge = 1.8 mL
Therefore, 2.9 cartridges is the maximum
answer for399 from this calculation i calculated for 70kg person answer is 24.5 ml

it means 24.5/1.8 = 13.61. so does it show 13.6 cartriges is safe for 70 kg person? As i remember we can use maximum 8 cartriges (even less). am I right?
I think if we all would agree the number of cartriges which is safe for adult we can * 1.8ml (cartrige) and can get the right answer.
so X * 1.8 = max safe dose
so 8 * 1.8 = 14.4 ml . am i right ?

 

[sonpari]

ihi guys

bit confused over q 374 ..😱
cawson and skully have stated the following Rx :
for pt with h/o IE (irrespective of type of anaesthesia ) but nt allergic to Pn and have not had Pn more than once in previous month ...

amoxycillin : 1g I.M in 2.5 ml of 1% of lignocaine or a or amoxycillin 1 g I.V plus gentamycin 120 mg I.M or I.V immediately before dental Rx

a further .5 g amoxycillin should be given orally 6 h later ..

so how the answer can be 'a' and what are these 1997 guidelines ....
anyone knows and ur comments on q374😕😕😕
if allergic to pn or have had pn more than once in past month
then :
vancomycin 1 g I.V infusion over 100min followed by 120 mg of gentamycin i.v orthe vancomycin may be replaced with teicoplanin 400 mg ...

they also have stated that clindamycin is used when pt is allergic to pn with no h/o I. E ..(pages 76 , 77 )

cheers

 

[sonpari]

it means 24.5/1.8 = 13.61. so does it show 13.6 cartriges is safe for 70 kg person? As i remember we can use maximum 8 cartriges (even less). am I right?
I think if we all would agree the number of cartriges which is safe for adult we can * 1.8ml (cartrige) and can get the right answer.
so X * 1.8 = max safe dose
so 8 * 1.8 = 14.4 ml . am i right ?[/quote]


hi drhelos

check this table no 2.2 pg 25 in cawson (med probs in dentistry )

it says max safe dose LA (lignocaine 2%)for fit adult : 200 mg (5 * 2 ml cartrigdes )
which comes out to be 10 ml hence the answer for q 318; no if we keep that in mind the max safe doze shud be 10 ml not 14.4 ....atleast that now i am sure after reading in cawson
next we know that cartridges come in std size of 1.8 ml or 2.2 ml
then if i follow ur method then
x*1.8=10 or x*2.2=10

acc to calculation if 1.8 ml cartriges then 5.5 (approx)and if 2.2ml then 4.5 which falls well below the 8 cartriges limit ....

so the answer should be either one of them ???😕

😱wat to do which is the correct one ??its more confusing wen we not having rest of the options
what i think is the missing option must have 10 ml and they have just twisted the q 318 and lets nt forget that these 1000 mcqs have been put together by seniz ... and whta ever best they could remember they have tried to put on paper ...so wat i feel is this option of 10 ml has been forgotten by someone ...
cheers

 

[navprax]

hi sonpari
with this message , attachment enclose infective endicarditis guidlines
avery good table is made for dose and drug
pls have a look

 

[DrHelos]

it means 24.5/1.8 = 13.61. so does it show 13.6 cartriges is safe for 70 kg person? As i remember we can use maximum 8 cartriges (even less). am I right?
I think if we all would agree the number of cartriges which is safe for adult we can * 1.8ml (cartrige) and can get the right answer.
so X * 1.8 = max safe dose
so 8 * 1.8 = 14.4 ml . am i right ?

hi drhelos

check this table no 2.2 pg 25 in cawson (med probs in dentistry )

it says max safe dose LA (lignocaine 2%)for fit adult : 200 mg (5 * 2 ml cartrigdes )
which comes out to be 10 ml hence the answer for q 318; no if we keep that in mind the max safe doze shud be 10 ml not 14.4 ....atleast that now i am sure after reading in cawson
next we know that cartridges come in std size of 1.8 ml or 2.2 ml
then if i follow ur method then
x*1.8=10 or x*2.2=10

acc to calculation if 1.8 ml cartriges then 5.5 (approx)and if 2.2ml then 4.5 which falls well below the 8 cartriges limit ....

so the answer should be either one of them ???😕

😱wat to do which is the correct one ??its more confusing wen we not having rest of the options
what i think is the missing option must have 10 ml and they have just twisted the q 318 and lets nt forget that these 1000 mcqs have been put together by seniz ... and whta ever best they could remember they have tried to put on paper ...so wat i feel is this option of 10 ml has been forgotten by someone ...
cheers [/quote]
dear sanpori
thank you for ur reply. you are right.
I said 8 cartriges and 300 mg, and finally 14.4 according to odell. but Ithink cawson is more reliable and 8 cartriges is too much ,and as i read before we gave 5.5 (1.8 ml ), not never 8, but I tought i made a mistake after i saw in odell.
so 10 ml is max safe dose and 5.5 (1.8) or 4.5 (2.2) cartriges. I agree.
thank you again

 

[sonpari]

hi sonpari
with this message , attachment enclose infective endicarditis guidlines
avery good table is made for dose and drug
pls have a look

hi nav

tnx for it but then wat are we supposed to accept as standard ...this attachment or cawson ?
cawson is the book recommemded by adc itself

that makes me 😱 crazy...
i am reali confused ...

🙁😕

 

[sonpari]

dear sanpori
thank you for ur reply. you are right.
I said 8 cartriges and 300 mg, and finally 14.4 according to odell. but Ithink cawson is more reliable and 8 cartriges is too much ,and as i read before we gave 5.5 (1.8 ml ), not never 8, but I tought i made a mistake after i saw in odell.
so 10 ml is max safe dose and 5.5 (1.8) or 4.5 (2.2) cartriges. I agree.
thank you again[/quote]

hi drhelos

u are welcome ..even i pondered as at uni i had also read somewhere that u never exceed 7 cartridges ..so was curious to find out and then cawson was a help...

😀cheers

 

[sonpari]

hi guys

q 418
the option selected in answers in a,b but i remember reading that periodontosis causes angular bone loss and then i cross
checked in white and goaz periodontosis (juvenile periodontitits) does cause vertical or angular type bone resorption ....now shouldnt the answer be ' d '

cheers

 

[navprax]

Q374
i agree with you Mcqs are very much confusing .by not getting exact answer more confusion is there by this our problem are increasing

cawson is old book and i agree with u at every point but these are the new guidelines which are released by american dental association itself . with time drug and dose changes and australia is country which follows both pattrens of dentistry american and english . so we cannot ignore the latest changes this guidelines i downloaded form american dental associations site only

 

[navprax]

wat does iritation means here?
i dont understand plaque iritate gingiva plaque is responsible for periodontits wat does iritation means here???

 

[drill]

hi dear dr helos, sonpari and navprax
I have seen your discussion about maximum safe dose of lidocaine
now it seems there are two version of safe dose
as dr helos first said maximum for adult 300mg which is what I have read from Master Dentistry too.
then as sonpari 200mg from cawson .

so If 200mg is right , 10ml should be the answer.
If 300mg is right , 15ml should be the answer.

the question is , we should know Australian standard. ......

 

[drill]

hi drill
compare Q80 and Q400
in Q 400 answer is B
but in option e ph is no mentioned

hi navprax, i think no matter ph is mentioned or not in answer E, B is the choice .

 

[drill]

hi guys

q 418
the option selected in answers in a,b but i remember reading that periodontosis causes angular bone loss and then i cross
checked in white and goaz periodontosis (juvenile periodontitits) does cause vertical or angular type bone resorption ....now shouldnt the answer be ' d '

cheers

agree ....

 

[drsabry]

ID : drsabry
status : in assessment phase
location ： London
country of origin ： Egypt
area can help with or need help： Need the password and if you could plz tell me what to start with as i'm lost atm.
year of degree ： B.Sc in dentistry
time in Oz ：
email : [email protected]

thank you for this great forum

 

[navprax]

in oxford clinical dentistry page 640 ch 13 lidocaine/adrenaline extremely safe max .dose adult 500mg (10 *2.2ml catridges) .wat this 10 * 2.2ml means ??????????????????

 

[navprax]

1.Patient presents to you with a history of local pain in the lower right posterior region. Insisting that you extract his lower teeth. The teeth in question are vital without any pathology. You diagnosis is:

A.Odontalgia
B.Referred pain
C.Trigeminal neuralgia




pain in the posterior lower right jaw is diagnosed as trigeminal neuralgia ??????????pls coment

 

[crickdentist]

ID : crickdentist
status : preparing oet for Feb 08 and materials for assessment
location : China
country of origin : China
area can help with or need help : need help and encouragement to pass adc
year of degree :1994
time in Oz :
email : [email protected]

 

[sonpari]

1.Patient presents to you with a history of local pain in the lower right posterior region. Insisting that you extract his lower teeth. The teeth in question are vital without any pathology. You diagnosis is:

A.Odontalgia
B.Referred pain
C.Trigeminal neuralgia




pain in the posterior lower right jaw is diagnosed as trigeminal neuralgia ??????????pls coment

hi nav

even i was bit suspiciuos abt this ...in my opinion ....it should be referred pain ???wat u say guys ...

😕

 

[sonpari]

hi crickdentist and drsabry

welcum

cheers

 

[sonpari]

in oxford clinical dentistry page 640 ch 13 lidocaine/adrenaline extremely safe max .dose adult 500mg (10 *2.2ml catridges) .wat this 10 * 2.2ml means ??????????????????

lolz does that mean 10 cartridges of 2.2ml.... now thats ....wat?

 

[sonpari]

hi dear dr helos, sonpari and navprax
I have seen your discussion about maximum safe dose of lidocaine
now it seems there are two version of safe dose
as dr helos first said maximum for adult 300mg which is what I have read from Master Dentistry too.
then as sonpari 200mg from cawson .

so If 200mg is right , 10ml should be the answer.
If 300mg is right , 15ml should be the answer.

the question is , we should know Australian standard. ......[/quote]

hi drill ,drhelos and nav
i checked few websites and ya oxford as well i says 300 to 500 mg is the max dose ...but drill here we talking abt lignocaine without adr so ....

now i checked aus dental asociation website ....pasting the link
http://www.ada.org.au/search.aspx?search=safe dose of lignocaine&op=and

check this 6_meds_in_dent_sup_05subr.pdf titled document if u cant then let me kno i ll forward the pdf file ..

i says that max safe dose for 70kg person is 300 mg (2%
of lignocaine )without adrenaline so now understood that acc to aus standrds max safe dose is 300 mg

so the correct answer is 15 ml...

so BINGO atlast we have the answer ...👍😀

cheers

 

[sonpari]

hi dear dr helos, sonpari and navprax
I have seen your discussion about maximum safe dose of lidocaine
now it seems there are two version of safe dose
as dr helos first said maximum for adult 300mg which is what I have read from Master Dentistry too.
then as sonpari 200mg from cawson .

so If 200mg is right , 10ml should be the answer.
If 300mg is right , 15ml should be the answer.

the question is , we should know Australian standard. ......[/quote]

hi drill ,drhelos and nav
i checked few websites and ya oxford as well i says 300 to 500 mg is the max dose ...but drill here we talking abt lignocaine without adr so ....

now i checked aus dental asociation website ....pasting the link
http://www.ada.org.au/search.aspx?search=safe%20dose of lignocaine&op=and

check this 6_meds_in_dent_sup_05subr.pdf titled document if u cant then let me kno i ll forward the pdf file ..

i says that max safe dose for 70kg person is 300 mg (2%
of lignocaine )without adrenaline so now understood that acc to aus standrds max safe dose is 300 mg

so the correct answer is 15 ml...

so BINGO atlast we have the answer ...👍😀

cheers

 

[drill]

hi nav

even i was bit suspiciuos abt this ...in my opinion ....it should be referred pain ???wat u say guys ...

😕

I would say without further information , my impression will be referred pain too.......

 

[drill]

hi dear dr helos, sonpari and navprax
I have seen your discussion about maximum safe dose of lidocaine
now it seems there are two version of safe dose
as dr helos first said maximum for adult 300mg which is what I have read from Master Dentistry too.
then as sonpari 200mg from cawson .

so If 200mg is right , 10ml should be the answer.
If 300mg is right , 15ml should be the answer.

the question is , we should know Australian standard. ......

hi drill ,drhelos and nav
i checked few websites and ya oxford as well i says 300 to 500 mg is the max dose ...but drill here we talking abt lignocaine without adr so ....

now i checked aus dental asociation website ....pasting the link
http://www.ada.org.au/search.aspx?search=safe dose of lignocaine&op=and

check this 6_meds_in_dent_sup_05subr.pdf titled document if u cant then let me kno i ll forward the pdf file ..

i says that max safe dose for 70kg person is 300 mg (2%
of lignocaine )without adrenaline so now understood that acc to aus standrds max safe dose is 300 mg

so the correct answer is 15 ml...

so BINGO atlast we have the answer ...👍😀

cheers[/quote]

hi sonpari, good on you
btw, i think adrenaline has nothing to do with max. safe dose, am I right?

 

[drill]

A patient with reasonable oral hygiene has a small proximal caries on the premolar. The patient requests an aesthetic filling. Your preparation will be:
​

Same as amalgam with cavo-surface bevels

Proximal caries removal with occlusal & gingival bevels

don't quite understand ?​

 

[sonpari]

A patient with reasonable oral hygiene has a small proximal caries on the premolar. The patient requests an aesthetic filling. Your preparation will be:​

Same as amalgam with cavo-surface bevels

​

​

Proximal caries removal with occlusal & gingival bevels​

don't quite understand ?​

hi drill

as far as my understanding goes ...the caries lesion is small involving the proximal area so cavity prep should involve class II cavity prep for tooth couloured restoration...
but now i dont agree with answer in the key provided ...

just read this :

sturdevent pg 591
"it says incorporation of enamel cavosurface bevel in prep of composite is recommended because it -
-provides more surface area for bonding
-allows for more end on etching of enamel rods "

later on pg 592 he says "whether replacing old amalgam restn or makin a new one for composite replacemnt , a bevelled conventional design is recommended ...though conservation od tooth structure should be kept in mind ....
concluding all he says that class II bevelled cavity prepatration should be prepared with as little fascilolingual extn as possible and should not be routinely extended to pits and fissures on the occlusal surface where sealants may be indidcated "(sturdevent pg 592 )

he has stated using other bevels as well but when there is an extensive post lesion..
so i guess the answers hould be A

PL comment 😕😕
cheers

 

[sonpari]

hi drill ,drhelos and nav
i checked few websites and ya oxford as well i says 300 to 500 mg is the max dose ...but drill here we talking abt lignocaine without adr so ....

now i checked aus dental asociation website ....pasting the link
http://www.ada.org.au/search.aspx?search=safe dose of lignocaine&op=and

check this 6_meds_in_dent_sup_05subr.pdf titled document if u cant then let me kno i ll forward the pdf file ..

i says that max safe dose for 70kg person is 300 mg (2%
of lignocaine )without adrenaline so now understood that acc to aus standrds max safe dose is 300 mg

so the correct answer is 15 ml...

so BINGO atlast we have the answer ...👍😀

cheers

hi sonpari, good on you
btw, i think adrenaline has nothing to do with max. safe dose, am I right?[/quote]


hi drill if u read that pdf carefully

it says that max safe dose in general is 300-500mg
and with adr its in range of 300-500 ; 500 being max
and without adr 300 is the max ..

cheers 👍

 

[sonpari]

I would say without further information , my impression will be referred pain too.......

i agree

 

[sonpari]

hi guys

wat abt q482

i kinda cant recall ...🙁
and wat abt q500
i reali dont understand by poor reac to bleeding

 

[DrHelos]

A patient with reasonable oral hygiene has a small proximal caries on the premolar. The patient requests an aesthetic filling. Your preparation will be:​

Same as amalgam with cavo-surface bevels

​

​

Proximal caries removal with occlusal & gingival bevels​

don't quite understand ?​

Dear drill and sanpori
preparation for class II composite : according to summitt
bevels in enamel provide more area for acid etching and bonding
in addition bevel is designed to expose enamel rods transversely to achieve more effectice etching pattern.
a)facial and lingual proximal margins: should be beveld 0.5 mm at approximately a 45 degree angle to the surface
b) gingival margin:should be beveld if margin is above the cementoenaml junction
c) occlusal cavosurface margin bevel should be avoided because
avoidance of bevel prevents
1-the loss of sound tooth structure
2-decreases the surface area of the final restoration
3-lessons the chance of occlusal contact
4-eliminate a thin area of composite that would be more susceptible to fracture
5- presents a well demarcated marginal periphery

therefore, b is not the answer. a is better but i think it would be better
:same as amalgam with cavosurface bevel except occlusal cavosurface bevel. but even it can not be exactly as the same as amalgam because it is more conservative. I think the key is to know: avoid occlusal surface bevel.
am i right?

 

[DrHelos]

I know angular type of bone eresorbtion can be seen in periodontitis, but I dont know about occlusal traumatisim and food particles retention . could u please help me?

 

[navprax]

here bleeding reaction means clot formtion process to control bleeding or hemoraghe which occurs due to liver cirhosis

the question was asked in weird way similarly they asked for ginival iritation

 

[DrHelos]

dear friends
I cant follow you can I ask you:
have u first started to study the books (or abstract books, or any book) and now started to study the questions? or you have strated directly from the questions? do u think it s a good idea to study some abstract books then come to the questions?
thank you in advence for the reply

 

[sonpari]

Dear drill and sanpori
preparation for class II composite : according to summitt
bevels in enamel provide more area for acid etching and bonding
in addition bevel is designed to expose enamel rods transversely to achieve more effectice etching pattern.
a)facial and lingual proximal margins: should be beveld 0.5 mm at approximately a 45 degree angle to the surface
b) gingival margin:should be beveld if margin is above the cementoenaml junction
c) occlusal cavosurface margin bevel should be avoided because
avoidance of bevel prevents
1-the loss of sound tooth structure
2-decreases the surface area of the final restoration
3-lessons the chance of occlusal contact
4-eliminate a thin area of composite that would be more susceptible to fracture
5- presents a well demarcated marginal periphery

therefore, b is not the answer. a is better but i think it would be better
:same as amalgam with cavosurface bevel except occlusal cavosurface bevel. but even it can not be exactly as the same as amalgam because it is more conservative. I think the key is to know: avoid occlusal surface bevel.
am i right?

hi drhelos

u rite avoid cavosurface occlusal bevel... its in sturdevent tooo....sorry i missed it..and u rite cavity prep has to be cons a is the option ..so option reaching similar level is a

cheers

 

[sonpari]

here bleeding reaction means clot formtion process to control bleeding or hemoraghe which occurs due to liver cirhosis

the question was asked in weird way similarly they asked for ginival iritation

thanks nav
i guess u rite ...👍
cheers

 

[sonpari]

I know angular type of bone eresorbtion can be seen in periodontitis, but I dont know about occlusal traumatisim and food particles retention . could u please help me?

hi drhelos

carranza has it that occlusal traumatism has angular bone resorption and i remember reading abt food particles tooo....
guess nav and drill shud comment on this

cheers

 

[sonpari]

hi guys

any idea abt q538

😱😕

 

[zahnfee]

hi,
iam back from my holiday.
which questions are on this week? will overjump the ones i missed due to my holiday so that i can join the discussion again.

 

[DrHelos]

hi guys

any idea abt q538

😱😕

Dear sonpari

Air alone as a coolant is not effective in preventing
pulpal damage because it needlessly desiccates
the dentin and damages the odontoblasts (Sturdevant)​

 

[DrHelos]

hi guys

any idea abt q538

😱😕

Dear sonpari
Air alone as a coolant is not effective in preventing
pulpal damage because it needlessly desiccates
the dentin and damages the odontoblasts​

 

[DrHelos]

hi drhelos

carranza has it that occlusal traumatism has angular bone resorption and i remember reading abt food particles tooo....
guess nav and drill shud comment on this

cheers

thank you for yr reply.
Im also waitng for others for others explanation

 

[drill]

Dear drill and sanpori
preparation for class II composite : according to summitt
bevels in enamel provide more area for acid etching and bonding
in addition bevel is designed to expose enamel rods transversely to achieve more effectice etching pattern.
a)facial and lingual proximal margins: should be beveld 0.5 mm at approximately a 45 degree angle to the surface
b) gingival margin:should be beveld if margin is above the cementoenaml junction
c) occlusal cavosurface margin bevel should be avoided because
avoidance of bevel prevents
1-the loss of sound tooth structure
2-decreases the surface area of the final restoration
3-lessons the chance of occlusal contact
4-eliminate a thin area of composite that would be more susceptible to fracture
5- presents a well demarcated marginal periphery

therefore, b is not the answer. a is better but i think it would be better
:same as amalgam with cavosurface bevel except occlusal cavosurface bevel. but even it can not be exactly as the same as amalgam because it is more conservative. I think the key is to know: avoid occlusal surface bevel.
am i right?

hi regarding 480 sonpari and drhelos
thank you guys for clearing my doubts
very much thankful 👍

 

[drill]

thank you for yr reply.
Im also waitng for others for others explanation

hi drhelos , I also read about angular resorption in occlusion trauma and food retention in some articles. but i don't have a perio book on hand to refer to at the moment.

now the question is " more often seen in ", so I am not sure if these two options should be chosen as a common cause. waiting for others to give reference.

 

[drill]

hi guys

any idea abt q538

😱😕

I remember I read somewhere about this, the air dries the surface and crown end of dentinal tube, which lowers the pressure of that side of tubule ( I guess similar principle as a capillary tube), so that draws and elongates the odontoblast into tubule.

 

[drill]

dear friends
I cant follow you can I ask you:
have u first started to study the books (or abstract books, or any book) and now started to study the questions? or you have strated directly from the questions? do u think it s a good idea to study some abstract books then come to the questions?
thank you in advence for the reply

hi drhelos I didn't finish any single one text book before started. I would like to but it was a bit difficult. I think we can always refer to reference while doing MCQs. we still have time to read after we roughly go through MCQs the first time. ( I said "roughly"because for me still there are a lot of unclear Qs and need to read text book regarding these ones ) and we should be able to go through much quicker for a second time targeting the unclear ones.

I know some ppl first categorize mcqs into different dicipline and read. I think it is also a very good revise method.

to Zahnfee, welcome back .
we are targeting up to 600 this week according to 150/week.

although I know still a lot of Qs in the first 600 are unclear. we can always discuss.

drill